La Sportiva - Exum River (Orange) - Men's: A technical canyoneering shoe built to protect, provide superior traction, and stay firmly attached to your foot. Synthetic leather upper. Hydrophobic mesh lining. Molded rubber reinforcements in the front half of the shoe are incredibly durable and provide just enough protection for your foot. Removable TPU strap securely latches the shoe to your foot so it will stay put in moving water. Dual-density MEMlex midsole. 3.5mm "suction" dot rubber lugs for excellent friction. Scooped shank with Trail Bite Heel Brake for security when plunge stepping loose scree. 4.5mm rear lugs for trail traction. RockShock absorption inserts in the heel for stability. Full-length polypropylene E.S.P. (Edging Stabilization Platform) provides trail running stability and edging platform for rock climbing performance. Sticky FriXion XF outsole grips like fly paper on both wet and dry surfaces. Slip lasted Strobel construction. Weighs 1 lb., 14 oz.