SpaceSaving Foldable Structure: The foldable design minimizes storage space when not in use and provides a portable solution that adapts to various carrying needs during work or travel. Advanced Insulation Technology: A triplelayer construction delivers extended thermal insulation, helping beverage temperature stay stable for longer periods. PhaseChange Insulation: Provides stable adaptability for outdoor picnics and everyday use, supporting seasonal versatility and reliable doubletemp beverage preservation through advanced thermal regulation mechanisms. Spacious Interior Chamber: A wide interior chamber with adaptive internal support offers secure protection and sealing, and it fits most bottles through its dimensionally flexible architectural design. Use scenarios Office daily use: Keep coffee hot through long meetings or maintain a refreshing cold drink during hot days, while easily accommodating bottle storage at your desk or in a bag. Travel and commuting: The foldable, compact form stores readily in a backpack or luggage, while the interior support keeps bottles secure and temperature stable during transit. Outdoor activities and picnics: Suitable for picnics, hikes, and everyday outings, with insulation that supports seasonal versatility and reliable temperature maintenance for beverages.