Oakley Si Core Tee – Black Flag Outfitters

Holiday DealsShop sunglasses, apparel, and more

Member DiscountsSign up to gain access to exclusive member deals

Oakley Si Core Tee

Oakley Si Core Tee

Oakley Si Core Tee

Oakley Si Core Tee

Oakley Si Core Tee

Oakley Si Core Tee

$30.00

Free shipping anywhere in the US

Low stock - 5 items left
Backordered, shipping soon

A core essential in every wardrobe, this undershirt works as a base-layer or stand-alone shirt. The SI Core Tee is a soft poly/cotton material with plenty of stretch, ribbed collar, and soft seam construction. Complete with a subtle Oakley SI logo on the left sleeve.

• O Hydrolix with moisture wicking and quick dry
• 85% poly/15% cotton
• Regular fit

[{"id":46025725247715,"title":"Blackout \/ S","option1":"Blackout","option2":"S","option3":null,"sku":"190645906703","requires_shipping":true,"taxable":true,"featured_image":{"id":44129030963427,"product_id":8776347844835,"position":1,"created_at":"2025-02-17T16:04:01-07:00","updated_at":"2025-02-17T16:04:03-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443","variant_ids":[46025725247715,46025725280483,46025725313251,46025725346019,46025725378787]},"available":false,"name":"Oakley Si Core Tee - Blackout \/ S","public_title":"Blackout \/ S","options":["Blackout","S"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544515811,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725280483,"title":"Blackout \/ M","option1":"Blackout","option2":"M","option3":null,"sku":"190645906697","requires_shipping":true,"taxable":true,"featured_image":{"id":44129030963427,"product_id":8776347844835,"position":1,"created_at":"2025-02-17T16:04:01-07:00","updated_at":"2025-02-17T16:04:03-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443","variant_ids":[46025725247715,46025725280483,46025725313251,46025725346019,46025725378787]},"available":false,"name":"Oakley Si Core Tee - Blackout \/ M","public_title":"Blackout \/ M","options":["Blackout","M"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544515811,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725313251,"title":"Blackout \/ L","option1":"Blackout","option2":"L","option3":null,"sku":"190645906680","requires_shipping":true,"taxable":true,"featured_image":{"id":44129030963427,"product_id":8776347844835,"position":1,"created_at":"2025-02-17T16:04:01-07:00","updated_at":"2025-02-17T16:04:03-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443","variant_ids":[46025725247715,46025725280483,46025725313251,46025725346019,46025725378787]},"available":true,"name":"Oakley Si Core Tee - Blackout \/ L","public_title":"Blackout \/ L","options":["Blackout","L"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544515811,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725346019,"title":"Blackout \/ XL","option1":"Blackout","option2":"XL","option3":null,"sku":"190645906710","requires_shipping":true,"taxable":true,"featured_image":{"id":44129030963427,"product_id":8776347844835,"position":1,"created_at":"2025-02-17T16:04:01-07:00","updated_at":"2025-02-17T16:04:03-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443","variant_ids":[46025725247715,46025725280483,46025725313251,46025725346019,46025725378787]},"available":true,"name":"Oakley Si Core Tee - Blackout \/ XL","public_title":"Blackout \/ XL","options":["Blackout","XL"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544515811,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725378787,"title":"Blackout \/ 2XL","option1":"Blackout","option2":"2XL","option3":null,"sku":"190645906734","requires_shipping":true,"taxable":true,"featured_image":{"id":44129030963427,"product_id":8776347844835,"position":1,"created_at":"2025-02-17T16:04:01-07:00","updated_at":"2025-02-17T16:04:03-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443","variant_ids":[46025725247715,46025725280483,46025725313251,46025725346019,46025725378787]},"available":true,"name":"Oakley Si Core Tee - Blackout \/ 2XL","public_title":"Blackout \/ 2XL","options":["Blackout","2XL"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544515811,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725411555,"title":"Dark Brush \/ S","option1":"Dark Brush","option2":"S","option3":null,"sku":"","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031323875,"product_id":8776347844835,"position":2,"created_at":"2025-02-17T16:04:19-07:00","updated_at":"2025-02-17T16:04:21-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461","variant_ids":[46025725411555,46025725444323,46025725477091,46025725509859,46025725542627]},"available":false,"name":"Oakley Si Core Tee - Dark Brush \/ S","public_title":"Dark Brush \/ S","options":["Dark Brush","S"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544745187,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725444323,"title":"Dark Brush \/ M","option1":"Dark Brush","option2":"M","option3":null,"sku":"190645854394","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031323875,"product_id":8776347844835,"position":2,"created_at":"2025-02-17T16:04:19-07:00","updated_at":"2025-02-17T16:04:21-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461","variant_ids":[46025725411555,46025725444323,46025725477091,46025725509859,46025725542627]},"available":true,"name":"Oakley Si Core Tee - Dark Brush \/ M","public_title":"Dark Brush \/ M","options":["Dark Brush","M"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544745187,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725477091,"title":"Dark Brush \/ L","option1":"Dark Brush","option2":"L","option3":null,"sku":"190645854431","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031323875,"product_id":8776347844835,"position":2,"created_at":"2025-02-17T16:04:19-07:00","updated_at":"2025-02-17T16:04:21-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461","variant_ids":[46025725411555,46025725444323,46025725477091,46025725509859,46025725542627]},"available":true,"name":"Oakley Si Core Tee - Dark Brush \/ L","public_title":"Dark Brush \/ L","options":["Dark Brush","L"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544745187,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725509859,"title":"Dark Brush \/ XL","option1":"Dark Brush","option2":"XL","option3":null,"sku":"190645854318","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031323875,"product_id":8776347844835,"position":2,"created_at":"2025-02-17T16:04:19-07:00","updated_at":"2025-02-17T16:04:21-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461","variant_ids":[46025725411555,46025725444323,46025725477091,46025725509859,46025725542627]},"available":true,"name":"Oakley Si Core Tee - Dark Brush \/ XL","public_title":"Dark Brush \/ XL","options":["Dark Brush","XL"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544745187,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725542627,"title":"Dark Brush \/ 2XL","option1":"Dark Brush","option2":"2XL","option3":null,"sku":"190645854356","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031323875,"product_id":8776347844835,"position":2,"created_at":"2025-02-17T16:04:19-07:00","updated_at":"2025-02-17T16:04:21-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461","variant_ids":[46025725411555,46025725444323,46025725477091,46025725509859,46025725542627]},"available":true,"name":"Oakley Si Core Tee - Dark Brush \/ 2XL","public_title":"Dark Brush \/ 2XL","options":["Dark Brush","2XL"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544745187,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/green_6c30db44-cbb3-45b3-be3a-44de14db3ba7.png?v=1739833461"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725575395,"title":"Tan \/ S","option1":"Tan","option2":"S","option3":null,"sku":"193517344405","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031356643,"product_id":8776347844835,"position":3,"created_at":"2025-02-17T16:04:22-07:00","updated_at":"2025-02-17T16:04:23-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463","variant_ids":[46025725575395,46025725608163,46025725640931,46025725673699,46025725706467]},"available":true,"name":"Oakley Si Core Tee - Tan \/ S","public_title":"Tan \/ S","options":["Tan","S"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544876259,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725608163,"title":"Tan \/ M","option1":"Tan","option2":"M","option3":null,"sku":"193517344399","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031356643,"product_id":8776347844835,"position":3,"created_at":"2025-02-17T16:04:22-07:00","updated_at":"2025-02-17T16:04:23-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463","variant_ids":[46025725575395,46025725608163,46025725640931,46025725673699,46025725706467]},"available":true,"name":"Oakley Si Core Tee - Tan \/ M","public_title":"Tan \/ M","options":["Tan","M"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544876259,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725640931,"title":"Tan \/ L","option1":"Tan","option2":"L","option3":null,"sku":"193517344382","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031356643,"product_id":8776347844835,"position":3,"created_at":"2025-02-17T16:04:22-07:00","updated_at":"2025-02-17T16:04:23-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463","variant_ids":[46025725575395,46025725608163,46025725640931,46025725673699,46025725706467]},"available":true,"name":"Oakley Si Core Tee - Tan \/ L","public_title":"Tan \/ L","options":["Tan","L"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544876259,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725673699,"title":"Tan \/ XL","option1":"Tan","option2":"XL","option3":null,"sku":"193517344412","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031356643,"product_id":8776347844835,"position":3,"created_at":"2025-02-17T16:04:22-07:00","updated_at":"2025-02-17T16:04:23-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463","variant_ids":[46025725575395,46025725608163,46025725640931,46025725673699,46025725706467]},"available":true,"name":"Oakley Si Core Tee - Tan \/ XL","public_title":"Tan \/ XL","options":["Tan","XL"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544876259,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":46025725706467,"title":"Tan \/ 2XL","option1":"Tan","option2":"2XL","option3":null,"sku":"193517344429","requires_shipping":true,"taxable":true,"featured_image":{"id":44129031356643,"product_id":8776347844835,"position":3,"created_at":"2025-02-17T16:04:22-07:00","updated_at":"2025-02-17T16:04:23-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463","variant_ids":[46025725575395,46025725608163,46025725640931,46025725673699,46025725706467]},"available":true,"name":"Oakley Si Core Tee - Tan \/ 2XL","public_title":"Tan \/ 2XL","options":["Tan","2XL"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544876259,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/tan.png?v=1739833463"}},"requires_selling_plan":false,"selling_plan_allocations":[]}]

{"id":46025725313251,"title":"Blackout \/ L","option1":"Blackout","option2":"L","option3":null,"sku":"190645906680","requires_shipping":true,"taxable":true,"featured_image":{"id":44129030963427,"product_id":8776347844835,"position":1,"created_at":"2025-02-17T16:04:01-07:00","updated_at":"2025-02-17T16:04:03-07:00","alt":null,"width":2000,"height":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443","variant_ids":[46025725247715,46025725280483,46025725313251,46025725346019,46025725378787]},"available":true,"name":"Oakley Si Core Tee - Blackout \/ L","public_title":"Blackout \/ L","options":["Blackout","L"],"price":3000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":36009544515811,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/www.blackflagoutfitters.com\/cdn\/shop\/files\/black.png?v=1739833443"}},"requires_selling_plan":false,"selling_plan_allocations":[]}

You may also like

Recently viewed

Back to Men's Apparel

Stanley: Rugged and Reliable

Made for the Wild. Keep your drinks hot or cold all day long with rugged, reliable gear from Stanley, available now.

The Ultimate Sunglass Repository

Search our vast array of sunglasses from premium to everyday brands and find your next pair today.

Shop Sunglasses

Stay the Course with Garmin

Whether you’re hiking, biking, or running, Garmin provides the tools to track your journey and conquer new terrain.

Oakley Si Core Tee