DryNites Bed Mats with 'Stick and Stay Put' are designed for ultimate undercover confidence. Highly absorbent with waterproof backing, the new peel-off adhesive back sheet secures the Bed Mat to a mattress, keeping it in place for great night-long protection. DryNites?? Bed Mats are for children who sometimes wet the bed or simply for extra protection, DryNites Bed Mats offer the perfect solution for a comfortable night's sleep.