This set includes a strap, a strap clip, and 3 nosebridges in sizes S/M/L. It also includes a right lens and a left lens. This strap set can be combined with Zoggs Dioptre lenses, which are sold separately. The set is quick and easy to put together and features an easy adjust system made from high-quality silicone. Designed for people who wear glasses and contacts, Zoggs Optical Goggles kit come in a range of dioptres from -1.5 to -8.