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 & UnscentedErgonomicTravel FriendlyEasy CleanupHygienicNon-Porous MaterialPhthalate and Latex FreeDimensions Small: (Overall length:2.3"; Diameter at widest: 1.1") Medium: (Overall Length: 2.8"; Diameter at widest: 1.4") Large: (Overall Length: 3.5"; Diameter at widest: 1.7")Weight Small: 0.7 oz; Medium: 1.5 oz.; Large: 3.1 oz.Material 100% Silicone made with Silicone Silk