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: 3in.; Diameter at widest: 3in.), Medium: (Overall Length: 3.5in.; Diameter at widest: 3.5in.), Large: (Overall Length: 4in.; Diameter at widest: 4in.) Weight: Small: 0.6 oz; Medium: 1.1 oz.; Large: 1.5 oz. Material: 100% Silicone made with Silicone Silk