Dual-layer EVO ColdGear construction combines a soft, brushed interior & a sleek, smooth exterior. Ribbed center back panel. Signature Moisture Transport System wicks sweat to keep you dry & light. Lightweight, 4-way stretch construction improves mobility & maintains shape. Generous 1/2 zip front with stand collar. Raglan sleeves unlock mobility for serious range of motion. Thumbholes keep sleeves secure & help seal in your body heat. Shaped, drop-tail hem offers superior back coverage. Rolled forward side seams.