Patagonia Los Gatos 1/4 Zip - Boys': Our Boys' Los Gatos 1/4-Zip fights the chill with comfortable 100% polyester (30% recycled) high-pile, double-faced fleece. The classic quarter-zip design has a doubled fabric collar for neck warmth. Set-in sleeves and off-shoulder seams are comfortable under a pack. Features High-pile fleece is warm and soft and made of 100% polyester (30% recycled) Classic quarter-zip has doubled-fabric collar Off-shoulder seams for comfort under a pack Set-in sleeves 269 g (9.5 oz) Materials 8.6-oz 100% polyester (30% recycled) high-pile, double-faced fleece. Fabric is certified as bluesignA(R) approved