Smartwool Active 1/4 Zip Top - Men's Black Extra Large. This comfortable lightweight quarter zip combines the moisture management temperature regulation and odor resistance of Merino wool with durability of recycled polyester to help you stay warm without overheating while you work up a sweat. With targeted mesh zones for added breathability and offset shoulder and side seams to help reduce chafing it's the perfect layer for running jogging and so much more. Specifications for Smartwool Active 1/4 Zip Top - Men's: Manufacturer: Smartwool Sleeve Length: Long Sleeve Age Group: Adults Apparel Fit: Regular Gender: Male Application: Outdoor Fabric/Material: 53percent Merino Wool 47percent Tencel Pockets: No Lining Material: 8percent Wool-Merino 33percent TENCEL Lyocell 29percent Recycled Polyester Last Chance: Yes Features of Smartwool Active 1/4 Zip Top - Men's Our regular fit is intended to help give you room to move without additional bulk Fabric helps combine the moisture management temperature regulation and odor resistance of Merino with TENCEL Lyocell fiber Targeted mesh zones designed to help increase breathability where your body needs it Offset shoulder and side seams designed to help increase comfort and minimize chafing Locker loop at neck interior Front zipper length 7.5" (19 cm) Reflective elements Package Contents: Smartwool Active 1/4 Zip Top - Men's Smartwool SW00273400110XL000: Active 1/4 Zip Top - Men's Black Extra Large