Flying gently overhead, mobiles are both calming and entertaining for your baby. Our arm is designed to hold a variety of mobiles, so you can switch them whenever you Color is simply white. Made of solid beech wood. Finish is applied in multi-step process providing durability, depth of color and richness to each piece. Clamps onto crib railing; railing must be flat. DIMENSIONS Overall: 5.25" wide x 3" deep x 14.25" high Weight: 1.25 pounds