The suction cups don't stick easily. This is a tabletop punching ball that can be set up at home, in the office, or on a desk in your room. It's recommended for relieving daily stress and combating lack of exercise. Because it uses suction cups, it can be easily and securely fixed to a flat surface. It's spring-loaded, so it quickly returns after you punch it, allowing for continuous punching. It's also helpful for training children's brain and physical development, as well as improving hand-eye coordination. While it's not a full-fledged boxing tool, it can also be expected to tone your arms.