This boxer-style harness fits like underwear and has an O-ring that stretches to accommodate most dildo sizes. You can even wear these cotton shorts under your regular clothing or stuff them with your favorite packer. This harness is excellent for extended wear. The supportive, elastic waistband carries the weight of your dildo and gives you more freedom of movement and variety in positions. This harness is recommended for dildos with a flat base of approx. 4.4 cm or wider. It is machine washable. Please note: dildo not included. Dimensions M/L (Unstretched): Waistband diameter: approx. 33 cm Leg openings: approx. 24.1 cm long O-ring diameter: approx. 3.8 cm Dimensions L/XL (Unstretched): Waistband diameter: approx. 38.1 cm Leg openings: approx. 25.4 cm long O-ring diameter: approx. 3.8 cm