New in box.  Unused. 

The JoyFay Kangaroo Jumping Shoes in black and blue, size 39-41, are adjustable plastic shoes designed for full-body workouts. Made in China, these unique gym and training shoes come with a manual and are perfect for individuals looking to add a fun and effective exercise routine to their fitness plan. Whether you're a beginner or a seasoned athlete, these kangaroo jumping shoes provide a challenging and engaging workout experience for your muscles.