The Bot Dot reversible bumper and Bot Dot sheet feature a polka dot design that borrows colors from the comforter - enhance the robot theme through the use of color coordinated nursery decor accessories. All items in this set are made with high quality 100% cotton fabrics. The quilted comforter measures 43 inches x 37 inches. The reversible 4-piece bumper is 11 inches high x 158 inches long. The short sides measure 11 inches x 27 inches with ties in each corner. The long sides are 11 inches x 52 inches with 4 ties along the top and bottom. The crib skirt has an 11 inch drop and the fitted sheet is made to fit a standard size 28 inch x 52 inch crib mattress. The set is made of 100% cotton. Filling is 100% polyester fill. Warm hand or gentle machine wash with similar colors, do NOT bleach, line dry or tumble dry low and remove promptly and fold, warm iron. Do NOT rub, soak or wring. Do NOT dry clean.