Huub Aerious II 3.5 Wetsuit - SS18 Improved X-O Skeleton - Offers extra buoyancy and stability. Super Flexible And Buoyant Neoprene - Provides a comfortable fit. 3:5 Buoyancy - To correct sinky legs. Speed Cut Ankles And Breakaway Zipper - Allows you to transition from water to land quickly and easily. Extra Stretch Panels - Added to the right places to allow the wetsuit to stretch with the body.