Slim fit Zip-neck styling with internal neck tape for added comfort; locker loop for hang drying Raglan shoulder seams allow freedom of movement, with full underarm gusset for range of motion and chafe-free comfort Long center-front zipper vents body heat and is backed by kissing welts for low-bulk comfort next to skin Elastic thumb loops for secure hand coverage Stretch for added comfort and improved fit during movement Fabric?s diamond-grid pattern next to skin provides warmth and breathability; smooth, soft face makes for easy layering HeiQ Fresh durable odor control MiDori? bioSoft for added wicking and softness Dries fast Brand : Patagonia Fabric : Solids and prints: 100% recycled polyester diamond-grid double knit, Cross-dyes: 100% polyester (50% recycled) diamond-grid double knit