1. The difficulty can be adjusted by removing or adding slider parts, slowly increase the difficulty level, and find the right level to excite your pet. 2. The bottom anti-slip design can keep the dog in good condition during the slow feeding process of the dog. 3. Food grade material, safe, durable and easy to clean. 4. Puzzle puzzles to keep your dog busy while providing mental enrichment and reducing destructive behavior. 5. Suitable for dogs and cats of all sizes. Product Parameters Color: blue Dimensions: 30cm x 20cm x 4.3cm Product material: BPA and PVC Reminder: Teach your dog or cat how games work. No toy is indestructible. Do not leave toys with unattended pets. If damaged, remove and replace the toy.