Fully assembled right out of the box, the Revolt slips quickly over the hips, sitting securely over the pelvis, just fasten the velcro at waist level and tug the straps to the desired snugness- if desired, trim any excess strap. Compatible with many flange or suction based dildos, vibes or otherwise, your toy should be slipped through the front before stepping in- once in place, the back end of the toy will be covered in a thoughtful fabric pocket that's soft and cushioning against the skin. Fits up to a 60 inch (152.4cm) waist