The 7mm Billabong FURNACE Round Toe Wetsuit Boots are made with 100% superstretch, partially recycled Smart Foam neoprene for maximum flexibility, sealed and liquid taped seams to keep the cold water out, ultra warm Graphene Recycler Plus lining, and an anatomic and pre-bent design for a barefoot feel. Alos features a slip on design with a velcro ankle strap, and a sleek round toe front.