The Aqualung Echozip Boot is designed for warmth, comfort, and protection. Boots are geared for recreational divers who want to be prepared for many conditions, from varying water temperatures to uneven and hazardous terrain. Ergonomically designed like the rest of the Aqualung boot line, the Echozip uses their patented, anatomically correct ERGO shaped footbed and outsole to match the profile of your foot, preventing excess water retention and offering comfortable support. Protective 8mm-thick treaded sole provides premium protection against punctures, stings, and slips. Warm 7mm nylon-2 neoprene upper for the right amount of warmth in any conditions. Comfortable the Echozip boot uses just a few glued and sewn seams, which are placed away from the widest parts of the feet to minimize chafing. Durable closes with a heavy-duty, non-corrosive #10 YKK toothed zipper. Warmth is assured with the water entry barrier behind the zipper.To prevent zipper slippage once zipped up there is a hook and loop zipper retaining tab. Elastic binding at the top resists wear and tear. Eco-Conscious Packaging: Ships with minimal carbon footprint packaging. No plastic bags. Boots are black in color and available in multiple sizes.