Our Pets&rsquo; Favorite Tinker Tunnel &ndash; For Birds sized up to smaller African Greys and for other Playful Critters This comfy playing and sleeping tent will be your perfect cage accessory for your playful little critters. Tunnel Dimensions: 12" long x 9" in diameter It comes with wicker ball and wood toy attachments that are designed to entertain them. Squeeze some treats through the wicker ball for additional foraging fun. The is an opening at each end and a peek-a-boo hole in the front for birds/pets to look through so they don`t miss what`s going on while they are playing (or sleeping) in their tunnels This tunnel is made from non-harmful materials and was tested for safety. This canvas-type material is easy-care (washable). Suitable for all kinds of pets and birds up to the size of smaller Grey Parrots.