Handmade of heavy wood with screws. Rubber non-slip on top & bottom. Top is table for dog to sit, down, stand. Underside has sides to keep dog straight. Position platforms are incredibly versatile and an invaluable training aid for your dog. They are suitable for all dog breeds and puppies. The approximate size of the standard position platform on top is 38" x 16.5" x 4". The underside is 37” long x 15” wide. Sizes may vary slightly as the item is handcrafted. 18 lbs.