–The Ring Tree Gnaw from the Ancol Just 4 Pets range is made of natural materials. -The Ring Tree Gnaw is perfect for gnawing, nibbling, and adding interest to your pet’s environment. -The Gnaw features a string and hook so it can be hung from the top of a cage or hutch. – This toy measures 15cm (approx.) including string. -Components: Wood, pet-friendly dyes, pet friendly non-toxic glue -We are committed to reducing our packaging and using recycled and recyclable packaging. This item is supplied on packaging that is widely recycled.