Nike Men's Sz Small KO Quarter Zip Sweatshirt Royal Blue Obsidian Athletic Exercise Outdoors Excellent condition, no signs of wear. Size small. Armpit to armpit is about 20". The Nike Men's KO Quarter Zip Sweatshirt features a brushed interior fabric for lasting warmth, while a mesh-lined mock neck zips up to the chin for extra protection from the elements. Zip-up long sleeve training shirt Therma-FIT fabric keeps you warm when temperatures drop Mesh-lined mock neck zips up to the chin for extra protection against the elements Side and underarm panels minimize restriction for a wide range of motion Brushed interior fabric traps heat for lasting warmth in chilly weather Care Instructions: Machine wash Fabric: 100% polyester