Built as a base layer for cool conditions. The Saltwater Long Sleeve Thermal T-Shirt uses a 100% cotton knit to lock in warmth while letting excess heat escape. Long sleeves add coverage, and it layers cleanly under midlayers and jackets. Straightforward, durable, and easy to wear all season. No gimmicks-just dependable warmth. Fit & Design: Long sleeves Crewneck Waffle knit texture traps warmth while remaining breathable Garment Mineral Wash: a wash treatment that softens the fabric and gives a subtle, lived-in look Left chest woven diamond label and side seam hem woven label Additional Details: