These boots are suitable for any kind of water sports to keep the feet warm. The back of the heel has a special design that fits perfectly with open heel fins for scuba diving. The small boss is used to prevents the slipping of the fins strap. Both the toe and the heel are reinforced with long-lasting rubber and provide protection against wear and tear. They are made from soft, double-lined neoprene and have a practical zip from the sole to the ankle, making them easy to slip on and off. Water seepage is reduced to the minimum thanks to a thin flap seal under the zip, which acts as an effective barrier against any water that may seep through the zip. A strong non-slip molding covers the entire sole. Available in 3,5 mm 5 mm and 7 mm neoprene thickness