Prince Lionheart-Warmies Wipes Warmer +4 Warmies- Designed for use with Warmies reusable Cloth Wipes. The Warmies Wipes Warmers enhanced 3 part heating unit procides better warming and the unique Ever Fresh system that keeps wipes fresh and moist. Additional Warmies sold separately. Patented system works three ways. The Ever Fresh pillow keeps wipes moist by an evaporation and condensation process. Micropores in the pillow trap and release water as needed to maintain wipes moisture content. Second, Warmies Wipes Warmer is non browning. Keeping wipes moist by evaporation prevents most discoloration caused when wipes are warmed. Discoloration also occurs when aloe, lotions and other additives typically found in baby wipes are warmed over time. The Ever Fresh pillow effectively insulates your wipes from the warming surface, preventing browning. Lastly, Warmies Wipes are antimicrobial. Both the Warmies Wipes Warmer's tub and the Ever fresh pillow are treated with an EPA approved additive to inhibit the growth of microorganisms that may cause spoilage, odors and mildew.