This cock ring is simple and easy to use. Perfect for beginners starting out, theres no worry about abrasive metal, sizing, or getting a size thats too small. The leather strap wraps around the base of the cock and has a velcro closure. Find what fits best for you. Over time, the leather will stretch slightly if needed for a custom fit. If it ever gets uncomfortable, simply pull the strap to pull the velcro apart and release. Materials: Leather, velcro Leather strap Adjustable for a custom fit Velcro closure Phthalate free Great for beginners trying it out for the first time! MEASUREMENTS: Overall length: 8" (20.32 cm) Strap width: 0.6" (1.52 cm)