This is the XS Scuba Finclip Step In Straps Features: Specially designed to fit the most common models of adjustable fins. Does not require any structural modification to the fin. Simply apply the clamp to the rear end. It allows the user to step in the fin and have it automatically secure itself to your foot Finclip is a specialized attachment designed to fit the most widely-used adjustable fin models. Step in and the fin automatically secures itself to your foot without any modification to the fin itself! Simply apply the clamp to the rear end of the fin and fasten it with the necessary screws. Then, attach the bungees to the fin side posts, and Finclip is ready for use. Finclip offers adjustable distance between the heel and tip of the fin, with an adjustable length elastic band giving added size and model compatibility. Finclip is compatible with the majority of adjustable fin models, regardless of size.