SIZE bridge measures 6.5 inches wide by 3 inches tall, the perfect size to fit in your terrarium. MATERIAL bridge is made of sturdy, durable, and long lasting plastic. TERRARIUM ACCESSORY bridge makes a bright and fun addition to your terrarium. Colorful bridge is fun for you and your pet. EASY TO CLIMB structure of the bridge is easy for your hermit crab to grip and climb. SMALL PETS bridge is great for hermit crabs, reptiles, and other small pets.