ION Wing Board Leash Core Hybrid Ankle is a leash for wingfoiling with a hybrid concept: compact and less prone to tangling in normal riding, with extra leeway when the board pulls away after a crash. It combines a 7 mm coiled urethane cord with a 6 mm woven Dyneema cord for strength. A thin neoprene cuff with honeycomb silicone print and a Hyplaon exterior keeps the fit secure, while swivels help reduce twisting.