Fabrics and Construction Really lightweight, and packs down small (no larger than a jumper). Waterproof, windproof, and breathable fabric. Made from a durable 3-layer fabric. The stretchy outer fabric is made from woven 95% recycled polyester and 5% elastane. The stretchy outer fabric is bonded to a waterproof, windproof, and breathable TPU membrane, which is fused to a 100% recycled Microfleece backing. Microfleece lining, which is soft, warm and highly effective at wicking moisture away from the body. The outer fabric is treated with an ecological fluorine-free, water-repellent finish on the outer fabric. This prevents water from sitting on the outer shell and water droplets will easily shake off. Our cut allows for a lot of flexibility and less bulkiness. Raglan sleeves allow you to freely pull your arms into the main body when getting changed underneath. Made from recycled fabrics.