IST 3mm Tall Cut Boots with 10mm Thick Felt Sole combine the utility of a sturdy felt sole with the comfort and flexibility of a 3mm neoprene upper. Hard, thick felt soles provide traction on jagged, slippery coastal reefs and ensure a good grip for clambering up slick boat ladders. Tall cut boots rise above the ankle 0.4 felt sole provides traction on slick surfaces 3mm Neoprene Nylon II upper for warmth and flexibility Toe and heel caps protect high wear areas Heavy duty #10 YKK zippers