Cold days and long approaches call for breathable insulation and plenty of venting. Made for multiple activities with chafe-free seams throughout, the Rho Zip Neck is your base layer of choice for steady efforts in cool to cold temperatures. Its zip-down collar regulates extra warmth, while the light next-to-skin fit ensures soft, fleecy comfort as well as excellent heat trapping and moisture wicking.The Rho Zip Neck is even comfier than before, with baby-merrow stitching for a seamless inner feel. Arc'teryx Rho Zip Neck Jacket Womens | Black | X-Small | Christy Sports