This productA specialized luggage with thermal insulation properties.，Retain cold/Thermal insulation, the product has a pearl cotton insulation layer.+Aluminum foil parchment paper, offering excellent thermal insulation and preservation effects; ice packs are packages with a constant-temperature effect, suitable for keeping cool./Retains heat (acts as warm in winter and cool in summer), product features a thick thermal insulation layer,Offer excellent thermal insulation; product is foldable for easy portability. The portable, lightweight, and stylish design keeps food warm and fresh for extended periods, easy to use, suitable for outdoor picnics and everyday life (e.g., children can carry their lunch to school. Enjoy fresh food anytime while ensuring health and hygiene).Custom production based on customer requirements.