The Acre Series Jacket is designed to be fast and light. Performing well under high energy activities such as cycling, running, and hiking. The PertexA(R) shell and 40g PrimaLoftA(R) Gold insulation allows excess heat and vapor to escape while maintaining a radiant layer of warmth close to your core.Our PertexA(R) Quantum face fabrics are BLUESIGN certified and utilize an environmentally friendly PFC free DWR water-repellent coating. Insulated with PrimaLoftA(R) 40g Gold Active+, the Acre Jacket provides warmth without bulk, is breathable, and utilizes 55% recycled fibers.Entire jacket packs down into the front hand warmer pocket, allowing it to be highly compressed and easily carried in a jersey or side pocket. The jacket also makes for a great insulating mid-layer under any of our waterproof shells.*slim fit - size up if in between sizes