Yuragu (Plaything) Three-dimensional mesh, high-rebound cushion Size: Approximately 50cm x 50cm x 10cm Elderly individuals can perform balance training without difficulty. Simply stand on it and step in place for 30 seconds to 1 minute to strengthen the muscles around the bones and adjust muscle balance. After training, you can experience body relaxation when you walk. It doesn't put a strain on your knees or lower back. No box or instruction manual. This was a gift, but I am selling it because I have no use for it. Please understand that this is a used item. Will be wrapped in bubble wrap for shipping.