The Billabong Solution 7mm Boots are some serious pair of winter boots. Imagion 7mm of rubber around your toes. Your not gonna get cold. These boots are rounded tow with 7mm glued and blind stitched neoprene. Furnance thermal lining, Welded seams and a Adjustable Arch Strap. What more could you ask for a pair of top end top spec winter boots.