1. Can be used as a flying disic for outdoor play2. Soft foam molars, no damage to the teeth3. Pull ring design, interactive play4. Can float, train dogs to swim skills5. Environmental protection material, safe and harmless, no peculiar smell6. Particle design, increase friction, help teeth clean7. Material: EVA8. Size: small about 17.5cm, large about 27.5cm9. Weight: about 64 grams for small size, about 200 grams for large size

http://olla.gr/dog-toys-pets-tension-ring-tooth-cleaning-toys-specification-red-small/