The pinnacle of performance wear, the Half-Zip Midlayer is designed for daily training, crafted from a sustainably minded, Polartec® Power Grid blend. Equal parts breathable, lightweight and moisture-wicking, this slim-fitting staple will keep you cool and dry, mile after mile. Model in studio imagery is 5'2" and wearing a size S FEATURES Slim fit Polartec® Power Grid. 90% polyester, 10% Elastane Jersey Grid - 25% Recycled Contrast Body: Polartec® Power Grid. 39% Nylon, 37% Polyester, 24% Elastane Contrast Wind Flap: 100% recycled water-repellent polyester pongee with cire coating Bi-component knit Moisture wicking Odor resistant Constructed with blue sign OEKEO-TEX certified materials