After receiving this product, I washed the sheets according to the care instructions on the label. The result was that the sheets are now unusable, because they do not fit the mattress. If I force them to fit onto the mattress, the mattress becomes warped, and too small for the cradle. A gap of 3 inches is formed between the mattress and edges of the cradle. In short, using this product would not only be inconvenient but unsafe for my baby. Avoid buying this product!