Penn Plax, Bird Life, Natural Weave Cage Climbing Exerciser Mat Bird Toy 13.75''L x 13.75"W CLIMBING TOY ATTACHES SECURELY TO CAGE: the Penn Plax Bird Life Natural Weave Cage Climbing Mat hangs safely and securely to the top of your birds wire cage with the safety clips provided. NATURAL FIBERS AND WOODEN SHAPES: made of all natural materials, this Mat creates feet and beak exercise opportunities while the brightly colored wood shapes keep your bird entertained. ENCOURAGES PHYSICAL AND MENTAL EXERCISE: the climbing and pecking at this Weave Mat will provide physical exercise as well as mental activities  such as problem solving and thrill of accomplishment. FOR SMALL TO MEDIUM SIZED BIRDS: this Mat measures 13.75L x 13.75W. Sold separately are different styles and sizes, made by Penn Plax.