SPECIFICATION - Platform size:11.8" x 6" x 6"(L*W*H). Weight: 420g. The package contains: 1 x wooden platform with natural lava stone, mice and other furry animals that love to chew. PLATFORM + LAVA STONE 2-IN-1 - This toy has both platform and lava stone, no need to buy additional platform or lava stone, when the lava blocks are chewed up by your cute little fellow, he can buy some new lava rock and tie it to our platform with twine so he can keep using it. WOOD MATERIALS ARE SAFE TO USE - The hamster platform is made of natural wood that pets can chew while playing on, natural lava rocks, and your furry friend can keep his teeth super shaped by nibbling on these natural mineral cubes. EASY TO INSTALL - It's stronger, it's easier to put together. There are two big gaskets that can be installed on the wire mesh, which is more stable. Don't worry about unstable platform. The little pet can play on it safely. A GOOD PLACE TO REST - Nice and roomy, the platform are pretty good for your hamster, the colors in the cage look nice, exciting, and the chew toys are great. Platforms are interesting nesting and resting places that satisfy the natural instinct of small animals to eat or sleep on the ground.