Product Material: PU, thermal insulation cotton Size: 90mm, 120mm Applicable feeding bottle: suitable for feeding bottles with a diameter of 6.5-7CM Quantity: 1 Piece Package Contents: 1*insulated bottle cap, 1*USB charging cable 1.Milk Bottle Warmer This baby bottle warmer and warmer heats up quickly and evenly, stretches to fit most baby bottles, easy and safe to use. Suitable for baby bottles: suitable for baby bottles with a diameter of 6.5-7CM. The Velcro on the back can be adjusted to fit more bottles. 2. Portable, compact and compact design, easy to carry and store. The perfect solution for parents to warm their baby bottles comfortably, safely and easily while driving. 3. Sandwich thermal insulation design Sandwich structure thermal insulation design, thermal insulation heating core fireproof treatment, safety guarantee. The multi-layer material process is safe and reliable. The outer layer of the protective cover is made of high-quality PU material, which is soft and skin-friendly, and the heating layer generates heat for a long time. 4.USB charging: Comes with a USB cable, just plug the cable into a power bank, car USB or laptop port. The extra pocket of the bottle warmer can hold a power bank, allowing you to warm your milk anytime, anywhere. 5. Suitable for different materials Travel portable milk warmer is suitable for heating a variety of materials, can heat plastic, glass and stainless steel respectively. During the heating process, the surface of the portable milk warmer will not become hot, and the temperature reaches 42 C and automatically enters the heat preservation mode, which supports 24 hours of continuous heat preservation.