Kiss Goodbye to Wet Nights for Your Baby and Say Hello to Dry Nights with Tilly's B-Sensible 2 in 1 Tencel Waterproof Fitted Sheets and Mattress Protectors.Potty training is every parent's nightmare. It can be a frustrating and exhausting time, creating many sleepless nights. With our waterproof fitted sheets there will be no more changing wet sheets during the night and early morning because Tencel absorbs more moisture and dries 50% quicker and other fabrics.B Sensible's Tencel waterproof bedding is ideal for the whole family, especially those with allergies.Protect your bed and bedding from bacteria, germs, stains and bed bugs.