The new O'Neill Heat RT or Round Toe is the ideal boot for surfing in cold or temperate waters. This 5mm Surf boot is designed for great traction and durability, and the Heat Series surfing boots are incredibly warm. The 5mm thickness will keep your feet and toes warm even in arctic cold waters. Surfers looking for the best bootie, look no further than the O'Neill Heat Round-Toe Boot. Made of 100% super stretch fluid foam 5mm neoprene and a durable, yet soft sole, these boots will give you all of the performance most users will ever need. The seams are sealed and blind stitched to prevent water seepage. Shin and ankle straps helps tighten boots to the leg to further prevent flushing. A heel pull tab assists in putting on the boot. The boots heel and toes are reinforced for strength, durability and wear resistant's. Boots are available in multiple sizes, black in color.