The Echo T-Shirt is an OR best-seller, featuring stretchy and breathable bluesign®-approved materials and UPF 15 sun protection to create an ultra-comfortable, ultralight, anti-odor, 4-season specialist base layer for active outdoor pursuits on trail or in the alpine. Color: Black Size: Medium Very good used condition. Manufacturer’s recommended body measurements for size medium: Chest: 38.5” - 41.5” Waist: 31.5” - 34.5” Arm Length: 33.5”