a technical jacket made from recycled polyester . the elfyn jacket is an ecologically designed jacket and is made from a large proportion of recycled polyester. to protect against moisture from inside and outside, it is equipped with a 10k/10k membrane and has a durable water-repellent, pfc-free ecoeliteâ„¢ teflon impregnation. thermal dry system inserts in key areas ensure efficient sweat wicking and recycled thermal std insulation prevents cold spots. tape-sealed seams in critical areas and high-quality ykk® zippers offer durability.for even more protection and a perfect fit, the cuffs, inner cuffs and snow skirt that can be fixed to the pants are individually adjustable.