3 smooth graduated sizes to build up to when training Body-contouring curved handles for all-day wearability Comfort fit tapered base with slim neck Bulb-shaped head provides a satisfying fullness sensation Dimensions: Small: (Overall length: 3″; Diameter at widest: 3″), Medium: (Overall Length: 3.5″; Diameter at widest: 3.5″), Large: (Overall Length: 4″; Diameter at widest: 4″) Weight: Small: 0.6 oz; Medium: 1.1 oz.; Large: 1.5 oz. Material: 100% Silicone made with Silicone Silk