Stage has two sides and comes in varying sizes to suit varying breeds. Each stage has a flat side plus a large curve / radius side. This provides a rarely found perch that can provide another position for bird feet / exercise. Ie pet does not have to go to the floor to flatten thier feet out. Another good feature is that you can easily roll the perch over to alternate between the flat and curved position.
Note, product may develop small pieces, supervised use recommended at all times. Details subject to change.