Sliding disks are the ultimate accessory for strengthening and toning your abs. Simply place your feet and/or hands and slide them across any floor surface; green plastic side can be used on soft surfaces (eg. Carpet), and black foam side can slide on hard surfaces (eg. Laminate flooring). You can perform bodyweight exercises such as mountain climbers, knee tucks, and more. These dual-sided sliding disks are lightweight and easy to carry so you can do your ab training from anywhere!