Yukon Charlie's Sherpa

Dick's Sporting Goods says:
Design: Quick Click II™ Ratchet Binding Rapid Lite Flex™ Heel Strap Snow Motion™ axle system Durable, ultra-strong 6000 aluminum frame Lightweight, slip-proof aluminum heel plate Forged steel all-terrain crampons HDPE deck material for maximum power Specs: Weight Per Pair: 5 lbs. (10” x 36”), 4.8 lbs. (9” x 30”), 4.2 lbs. (8” x 25”), 3.4 lbs. (8” x 21”) Frame Material: 6000 Aluminum