• High quality: Made with high-quality, eco-friendly silicone material, durable, non-toxic, reusable, and easy to clean. • Bouncing effect: Simply push the bubbles down to create a soft popping effect, ideal for combating anxiety and stress in children and adults. • Innovative game: A classic puzzle board game that has won over 15 awards. Helps relieve stress and cultivates math skills, mental arithmetic, and logical thinking in children. • Anxiety relief: Perfect for moments of boredom or stress. Compact and easy to carry, ideal for stress relief anywhere. • Concentration improvement: Pushing the bubbles can improve attention and patience, both in children and adults in the office. • Dimensions: Each keychain measures 4.8 x 4.8 x 1 cm. • Packaging: Includes 29 pieces of stress-relief toys.