Great for training, start with the smallest plug and work your way up. The uniform spherical heads stretch you effectively, delivering a satisfying feeling of fullness that targets your sweet spots. Each has a slim neck and a wide base, ensuring ease and safety during use. A must-have addition for your collection! Approximate Product Dimensions: Anal Plug – Small Total Length: 3.75 in. (9.5cm), Insertable Length: 3 in. (7.6cm), Width/Diameter: 2 in. (5.1cm), Circumference: 6.25 in. (15.9cm). Anal Plug – Medium Total Length: 4.25 in. (10.8 cm), Insertable Length: 3.5 in. (8.9 cm), Width/Diameter: 2.5 in. (6.4 cm), Circumference: 7.75 in. (19.7 cm). Anal Plug – Large Total Length: 4.75 in. (12.1 cm), Insertable Length: 4 in. (10.2 cm), Width/Diameter: 3 in. (7.6 cm), Circumference: 9 in. (22.9 cm).