3 textured shaped graduated sizes to build up to when training. Textured ripples at tip for intense sensation. Bulb shaped design for a weighty feel. Suction cup base with slim neck for comfortable all-day wearability. Hypoallergenic & Unscented Ergonomic Travel Friendly Easy Cleanup Hygienic Non-Porous Material Phthalate and Latex Free Dimensions Small: (Overall length:2.3in.; Diameter at widest: 1.1in.) Medium: (Overall Length: 2.8in.; Diameter at widest: 1.4in.) Large: (Overall Length: 3.5in.; Diameter at widest: 1.7in.) Weight Small: 0.7 oz; Medium: 1.5 oz.; Large: 3.1 oz. Material 100% Silicone made with Silicone Silk