CAMP Crampons with Spikes, Strap-On - Brand: CAMP - Type: Crampons - Material: Metal and Plastic - Features: Spiked - Size Adjustment: Strap-on Thank you for viewing. These are CAMP chain crampons. They were a bit tight on the boots I used them with, so I'm putting them up for sale. They show considerable signs of use, but there is no damage to the metal or rubber parts, and I believe they are fully functional. Please consider that these are used items, and purchase with that understanding.