The O'Neill Heat Ninja 3mm Split Toe Boots are the perfect edition to any Spring/Autumn surfers, windsurfers collection. The 3mm thickness keeps your feet warm during the spring and autum months. The split toe adds more grip and balance to the boots. These boots are a fusion between wetsuit socks and wetsuit boots, with a very minimal, knee pad like sole. Torsion control forefoot Anti flush shin strap Split Toe 3mm Fluid foam Highly durable neoprene that resists abrasion and compression with a supple feel and good stretch. Stretch factor: 75%. Glued & Blindsticted Seam Construction The blindstitch seam is aptly named because the stitching only goes part way through the neoprene. If a suit is blindstitched, it is also glued so there is no leakage through the seams. Glued and blind stitched construction provides a waterproof seam. A blindstitched suit is also taped in all areas of excessive stress. O’Neill’s exclusive blindstitch is the Flexloc Stitch which is stronger and more flexible than the traditional blindstitch and eliminates unraveling of the seam. O'Neill's proven GBS-glued and blindstichted seam Is double-stitched partially through the surface and triple glued to create a watertight seam. If the thread breaks, the seam will not leak.