They are developed especially for glacier hikes and snow ascents. The jacks are light, compact and at the same time sufficiently durable thanks to the Cr-Mo steel used. Modified construction for lower weight and longer life under repeated loads. They have a reduced spike profile and thus provide better stability when walking. They can be easily tightened and loosened using the strap - O rings The asymmetric shape of the cat optimally copies your shoe and provides maximum support in more demanding terrain. The connecting plate made of flexible stainless steel makes walking easier. Clamping system for softer alpine shoes without clamping grooves.