LaCrosse Aerohead Sport 16" Non-Insulated Realtree Timber Patented AeroForm technology delivers revolutionary comfort and durability in a markedly quiet boot Molded polyurethane over a 3.5mm neoprene core for ultra-lightweight, flexible, waterproof comfort Thick polyurethane midsole for best-in-class cushioning and insulation underfoot Oversized shank covers the entire arch area for added stability and support Polyurethane reinforced shin and Brush Tuff bi-directional material provide abrasion resistance Flexible neoprene folds down for comfort in warmer conditions Molded kick-off heel plate for easy hands-free removal Active Fit with adjustable neoprene gusset for easy on/off and a secure, comfortable fit on foot Moisture wicking and quick-drying polyester jersey liner