Oakley Men's Si Defense Arch Tee

The Oakley SI Defense Arch Tee is a regular-fit men’s T-shirt designed for military use and everyday comfort. Its lightweight, breathable cotton-polyester construction is complemented by practical seam and collar details, while a subtle chest graphic adds distinctive SI styling.

• 50% polyester and 50% cotton fabric
• Lightweight, breathable construction
• Reinforced collar liner for added comfort
• Flat seams help reduce bulk against the skin
• Subtle arch graphic on the front chest
• SI Triangle logo and 1975 founding-year detail on the graphic

Estimated to ship within 7–10 business days.