bluesign® Approved 4.4-oz (150-g) Polartec® Power Grid™ | 100% Polyester (93% Recycled) Double Knit – Provides a smooth face for easy layering; micro grid fleece fabric's open-grid pattern next to skin provides superior warmth, breathability and moisture-wicking performance; spandex for stretch and ease of movement

Slim Fit – Designed to create bulk free layering.

Offset Shoulder Seams Eliminate Chafing Under Pack Straps

Elastic Thumb Loops for Secure Hand Coverage

Long Center-front Zipper Vents Body Heat and Is Backed for Low-Bulk Comfort Next to Skin

Flatlock Seams to Minimize Chafing

Internal Neck Tape on Collar for Comfort; Locker Loop for Low-Bulk Comfort Next to Skin

Fair Trade Certified™ Sewn

Polygiene® Permanent Odor Control – Polygiene® neutralizes odor by stopping the growth of odor-causing bacteria and fungi. Clothes stay fresh, odor free and can be worn several times without laundering. Also, Polygiene makes clothing last longer because bacteria and excessive washing don't break down fibers as quickly as they do on untreated material. Polygiene is safe next to skin and it's certified as bluesign® approved.