【Develop Core Strength and Balance While Playing!】 Just by jumping, you naturally develop "core strength," "balance," and "rhythm"! This is a kenkenpa ring set perfect for exercise play, eurhythmics, and educational training for children aged 3 to elementary school students! 【Set Contents】 ・Rings x 10 (approx. 28cm in diameter) ・Joints x 10 ・Material: Plastic ■ Recommended for: ・Indoor play and exercise on rainy days ・Exercise play at kindergartens, nurseries, and at home! ・Those who want to develop balance, strength, and concentration while having fun! * Recommended for playing with siblings and friends! ◆ Brand new, unused ◆ Immediate purchase OK ◆ Anonymous shipping