Menage a Trois Double Penetration Harness & Dildo Set. This double-penetration harness and dildo set is designed for even more penetration. Worn by a man, this thong-style harness has a built-in cock ring and includes 3 interchangeable O-rings of varying sizes (1.5" & 2" rubber, 1.75" metal). The Menage a Trois Harness features adjustable straps that fit up to 60" hips and includes Sportsheets flare dildo.