First introduced back in the ’70s, the spring strap is one of the best ideas to re-emerge on the diving scene. Eliminating problematic buckle/strap systems, the spring straps self-adjust, providing an excellent fit every time, and let you don and doff your fins with ease. The Atomic Universal Spring Strap is one of the best we’ve seen. Designed to fit virtually any open-heel fin, it takes only minutes to install a pair on your existing fins — no tools needed. Offering an internal adjustment so you can achieve that perfect fit, the soft stretch, variable-pitch stainless spring keeps a firm but comfortable grip on your foot. A rubber heel pad with large finger loop makes pulling on or taking off the fins easy. Available in two sizes: medium and large.