Stapon sex is the sex activity with, for example, 3-strap harnesses also have one strap around the wearer’s waist, but instead of one strap between the legs, have two straps, one around each thigh, rejoining the first strap near the front. This design leaves the genitals and anus uncovered, and attaches the dildo much more firmly, giving the wearer more control. However, not all people find this design comfortable, and sometimes they are hard to make fit properly or tend to slip.