Product Description Material: PU, thermal insulation cotton Dimensions: 90mm, 120mm Applicable bottles: suitable for bottles with a diameter of 6.5-7CM : high yellow, high green Quantity: 1 piece Package content: 1* bottle cover, 1*USB charging cable 1.Milk Bottle bottle warmer and heater w quickly and evenly, it can stretch to fit most feeding bottles, it is easy and safe to use.Applicable bottles: suitable for bottles with a diameter of 6.5-7CM .The velcro on the back can be adjusted to fit more bottles. 2.Portable and compactSmall and compact design for easy portability and storage. The solution for parents to comfortably, safely and easily warm the bottle while driving. 3. wich wich type structure heat insulation design, heat preservation and heating core core fire treatment, safety guarantee. The multi-layer material process is safe and secure. The outer layer of the protective cover is made of high-quality PU, which is soft and skin-friendly, and the heating layer long-term heating. 4.USB charging: Comes with a USB cable, just plug the cable into a power bank, car USB, or laptop port. The additional pocket of the milk warmer can be placed with a mobile power supply so that you can warm the milk anytime and anywhere. 5.Suitable for Different MaterialsThe portable bottle warmer for travel is suitable for heating of multiple materials, which can heat plastic, glass, and stainless steel respectively. During the heating process, the surface of the portable bottle warmer will not be hot, and the temperature will automatically enter the insulation mode when the temperature reaches 42 and support 24h continuous insulation.