Stud Harness: Fits hips up to 69" (175.3cm), cinching adjustments allow for a perfect fit. Has snaps that will accommodate a variety of O-ring sizes. Can be used with other dildos. 4-way adjustable straps are specially positioned to keep from pinching the scrotum. Strap-On: Hollow. Inner depth: 4.125 inches. External measurement: 6.5" long (16.5cm), circumference/girth: 5.125 inches. Comes with an interchangeable 2" O-ring. Materials: Polypropylene, PVC, ABS plastic, Nickel Free Metal Hardware, Nitrile. With the Everlaster, men who suffer from premature ejaculation or erectile dysfunction can enjoy continued penetrative sex with their partner, as can paralyzed men who have lost function in their penis. The Everlaster allows for the intimacy and connection of penetration, regardless of your body’s capabilities.