Attaches to an ASCENSION or BASIC rope clamp for rope ascents HMPE (high-modulus polyethylene) construction for reinforced durability Elastic keeps foot in loop, and is adjustable in length so it can be used with any type of shoes; it is also easy to store when not in use Plate for adjusting foot loop length Specifications Material(s): High-modulus polyethylene, aluminum Weight: 65 g