Wipe Warmers by Prince Lionheart. Details:Specially designed to accompany the Prince Lionheart Wipes Warmer of your choice, the Ever-Fresh Pillowcase Upgrade will help keep your wipes moist longer than ever. Simply insert your Ever-Fresh Pillow inside this handy Pillowcase and place at the bottom of your baby wipes warmer. The case helps keep the wipes moist and fresh, fighting against harmful living things, all while preventing the bottom of your wipes warmer from browning. By the way, browning is normal and expected. It is not burning. It is the result of the oxidation process when wipes with various additives are warmed, similar to an apple that oxidizes and turns brown once it is cut; it is safe to eat, just a little unsightly.