The basics Kung Shoe Grip 2.0: inside/outside nonslip shoe grip. The benefits Just stick self-adhesive Kung Shoe Grip anywhere in or on your heels to keep you safe and comfortable. The uses Kung Shoe Grip uses an amazing, durable 3M material with microfingers that will keep your feet from sliding around inside your shoe and also keep you from sliding on the floor. The bottom line Kung Shoe Grip does not cause sweat and works even on wet surfaces with your slippery shoes.