Fourth Element Women’s Halo A°R Drysuit UndersuitFourth Element Womens Halo AR Drysuit Undersuit Extreme thermal protection with ARGON aerogel insulation Bodymapped design for optimal warmth without bulk Wind and water repellent stretch outer layer P valve ready with two way fly zipper and leg pockets Comfortable thumb loops and foot stirrups for easy drysuit donning Offset chest zip minimizes heat loss in horizontal trim Machine washable for easy care The Fourth Element Womens Halo AR undersuit