Lightweight quarter zip with sophisticated ergonomic construction. Underarm gusset panels allow sleeves to move independently of the body, providing no-lift function and seamless range of motion. Nano-Mesh is our soft, sweat-wicking, antibacterial mesh with a clean matte finish. Elastic binding on the sleeves offer a minimalist secure fit. Reflective logo details provide visibility for night training.

Model is 5'11 170 lbs and usually wears size M. This product fits true to size, so he is wearing size M for a slim, performance fit.