Natural Materials & Handmade: All handmade and made from natural seagrass, 100% natural material, no other chemical materials, safe for your pets.Activity Rolling Play Balls– Important to encourage interest, curiosity and movement from your furry friend, such as bunny loves push it around the cage and gnaw or shred it when boredom. These balls can promotes clean and healthy teeth while help prevent boredom. Fun natural toys for small critters!Easy to Nibble – Due to suitable size(Diameter of balls around 2.75 inch), your cute critter can easily get their teeth around it and toss it to entertain themselves to enjoy pastime.Natural Chew Toys – Help to keep your pets teeth from becoming overgrown and causing health problems. Perfect alternative of plastic toys.Suitable for rabbits, bunny, hamsters,gerbils,guinea pigs and other or other rodents. Package includes: 4 pcs pet activity balls. You can give her/him one at a time to push around her/his cage and chew on until she/he's ready for the next one.