The Vac-U-Lock Dual Density Experienced Set is an excellent choice for experienced strap-on players and those accustomed to deeper penetration. A complete harness with removable o-rings and plug, three dual density ULTRASKYN attachments, and a bottle of Mood water-based lube make an intense strap-on romp as easy as 1-2-3. Featuring the dual density effect--a soft, pliable exterior that gives way to a firm inner coreâ€in lifelike material that warms to the touch, realistic attachments impart a strong and realistic sensation. Measurements: - Small: 20 cm length, max, diameter 5.1 cm - Medium: 23 cm length, max. diameter 5.1 cm - Large: 25.5 cm length, max. diameter 5.1 cm