The Infiniti 3mm split toe bootie from Xcel. The sizes shown above are men’s sizes. For women go down approximately one to one and a half sizes. - Thermospan lined upper boot for warmth - Nylon-2 lined sole for traction - Flex horizontal heel support - Ultra Stretch ankle panel w/ pull loop for easy on & off - Sole at split toe is solid – no leash hang-ups - Heel and toe support - Velcro cinch across instep - Glued and blind stitched - Taped seams