Ultra-Stretchy and Comfortable Rings for Customizable Pleasure Durable and stretchy all-purpose ringsCrafted from ultra-smooth premium grade siliconeMade with body safe and phthalate free materialsNonporous and completely odorlessWaterproof design3 sizes: Large 2.17 (55mm). Medium 1.97 (50mm). Small 1.77 (45mm)