Soft colors, cute animals, and lots of motion make this a winner for any child's room. The mobile is perfectly balanced, made of painted lightweight wood. There is no assembly required and can be hung straight from the box. Measure 16x21 inches. Mobiles, kinetic sculpture, have delighted people of all ages for a century. Pioneered by artist and sculptor Alexander Calder, they add a fascinating life and movement to a room. Once described as visual poetry, these symphonies of subtle movement are elegantly balanced and float in perpetual soft motion. They transform spaces otherwise not seen, providing visual stimulation and interest with whimsy, humor and a design aesthetic not often found in children’s room décor. Perfectly balanced, all can be hung right out of the box, with little to no assembly required. Enjoy the slow dance and soothing inner peace with this new focal point to any room.