Back Flex is a heel bail system. It allows you to use Petzl crampons with mountaineering or snowboard boots that don’t have heel welts. Sold in pairs to equip a pair of crampons.
Features • Compatible with Leopard Llf, Leopard Fl, Irvis Hybrid, Irvis, Vasak, Sarken, Lynx and Dart crampons with the Fil Flex, Fil Flex Small, or Fil Flex Wide toe bails • Product sold in pairs with fastening straps
