1 Piece 4.7/6.3 Inch Hamster Ball, Running Ball Toy, Transparent Breathable, Promote Sports Health, Relieve Stress, Easy To Clean, Hamster Running Ball, Sports Ball, Outdoor Running For Small Pets, Interactive Rodent Toy With Boredom Relief, Transparent Hamster Ball, Breathable Design, Easy To Carry, Blue Hamster Accessory, Suitable For Dwarf Hamsters, Rats, Mice, Small Pets