The Buoy is a soft, stretchy silicone ring, designed to keep the wearer harder for longer. Its thick and soft silicone keeps the testicles down and keeps the testes from contracting, thus slowing down ejaculation. The constriction raises the average speed of orgasm from about 6 seconds to 45 seconds. This medium-sized Buoy has an unstretched internal diameter of 22 mm for a tight fit. Soft, Stretchable Silicone Delays Ejaculation and Prolongs Erection Enhances Size and Thickness Easy to Clean Top Rack Dishwasher Safe Bleachable Hypoallergenic, Nonporous, and Odorless Phthalate Free, Body Safe Width/Diameter: 2 in. (5.1 cm) Unstretched Inner Diameter: 0.9 in. (23 mm) Depth: 0.6 in. (15 mm)