The CO-SLEEPER® brand bassinet attaches securely to the adult bed under the top mattress and fits all beds with a bed height of 24”, from twin to Cal King. We offer a Leg Extension kit that can bring the height up to 30” in 2” increments. Dimensions are 34”x 20”x31”, weighs 24 lbs. and holds up to 23 lbs. when used in the cosleeping position. Once your child is able to pull themselves to their knees is when CO-SLEEPER® brand bassinet use should be discontinued. Made of steel tubing, brushed cotton blend twill, and comes with one fitted sheet.