Training equipment developed and supervised by former marathon runner Mako Chiba. It's the "Running Method Jog Foot," which allows for efficient core training. Train at home and have fun! Walk, run, bounce, and freely strengthen your legs and lower back. You can easily do soft-bound exercises like stepping, jogging, and light jumps in your room. It's lightweight, so it's easy to move around. I purchased this about three years ago and have stored it without using it much. *There are some minor scratches and signs of use, but there are no noticeable scratches or stains. (Please forgive any oversights as this is a visual inspection by an amateur.) *The springs (feet) are a little loose and tend to come off. Please understand that this is a used item stored at home. There is no box, instruction manual, or warranty. ◆Color: Pink Body size: Approximately W60cm x D50cm x H14cm Weight: Approximately 4kg (including springs) Suitable weight: Under approximately 100kg *Since there is no outer box, it will be shipped in a recycled cardboard box.