Each piece of the Superior System suit is designed to layer, but created to be worn alone. With layering flexibility, your ice suit no longer needs to be one size fits all. Cold weather "Barrier" pieces are 15k/15k Waterproof/Breathable and feature Uplyft™ Breathable Flotation, while the "Insulator" pieces are removable and feature 150gm of 3M™ Thinsulate™ Platinum Water-Resistant insulation.