This core layering piece, warm and with a neutral fit and reflective details, is designed to look great whether you use it on its own or under a vest.Features:Made from 100% polyester fleece for extra warmth and wicking.Easy-sliding YKK® Vislon® zipper.3 rear pockets.Silicone gripper elastic at waist.Large reflective panels on both sleeves and center pocket.We designed this jersey with the idea that you´ll wear it half the time on its own and half the time under a vest in cooler conditions.So we made it look great no matter which way you use it.We made it highly functional using our Warmer fabric, which is thickly brushed on the inside, yet the 100% polyester composition means it doesn´t hold sweat.The bands on the sleeves and the vertical stripe on the pocket are reflective for low-light visibility.