The Dr. Laura Berman Intimate Basics Collection™ is designed by women for women to give you and your partner exactly what you need; color ergonomic designs discreet packaging superior quality quiet and powerful devices.For pleasure and to strengthen your pelvic musclesVibrating multi-speed handle3 interlocking graduated stacked dilator sleeves for custom girth selectionSoft universal sleeveABS (massager dilator sleeves) TPR (universal sleeve)2 AA batteries4.5”x 1.5”/ 11.5 cm x 3.75 cm (universal sleeve)3.5”x .75”/ 9 cm x 2 cm (small sleeve)4.5”x 1”/ 11.5 cm x 2.5 cm (medium sleeve)6.75”x 1.5”/ 17.25 cm x 3.75 cm (large sleeve)