Meet the FrogWedge Glute Builder: a handy tool that lets you activate your glute muscles to develop a rounder, firmer butt. It has a joint friendly design, so you can work your inner thighs and glutes without hip, knee or ankle pain.
This wedge is made of military grade TPU rubber. It weighs only 2lbs, so you can easily take it with you anywhere. To use it, simply place your feet on it, push, and squeeze.