Kollea 30L Cooler Cooling and 3 External Easy to Soft Cooler Perfect for Sports and Cherry Blossom Viewing Black Box, 4-Layer Insulation, Long-Lasting

[Four-layer insulation structure for excellent cooling and warming] This cooler bag features a three-layer structure including 1680D high-density Oxford fabric, 5mm thick EPE insulation cotton, and a waterproof aluminum liner, plus a PVC board on the bottom for enhanced insulation. It is more abrasion-resistant than typical 900D material, and the seamless hot-press construction prevents water from entering. With approximately 8 hours of cooling and warming function, it is convenient for outdoor activities and shopping. 【Lightweight and Easy to Carry】The 30L cooler box weighs approximately 683g and folds down to approximately 9cm thick (36.5 x 28.5 x 9cm). The 20L cooler box weighs approximately 569.5g and folds down to approximately 8cm thick (33 x 24 x 8cm). The honeycomb frame structure provides both lightness and sturdiness. The shoulder strap is thick to reduce strain on the shoulder. When not in use, it can be folded and stored compactly. 【Easy-to-use multi-functional design】The Kollea cooler bag can be carried by hand, over the shoulder, or across the body. The shoulder strap has a cushioned pad, and there are non-slip grips on the sides. There are three pockets on the outside (front + mesh on both sides) for convenient organization of small items. There is a small opening at the top, so you can quickly take out the contents without opening the entire cooler box. 【Leak-proof and Waterproof Design】Voltage fusion technology ensures a tight seal at the inner aluminum foil lining, maintaining cooling for extended periods. It can be used not only as a lunch bag but also for temporarily storing fish or water. The outer Oxford fabric is sturdy and durable, boasting excellent waterproofing. The waterproof aluminum foil lining makes cleaning easy; food crumbs and condensation can be simply wiped away. [Versatile for Various Occasions] The 30L soft cooler has an internal dimension of approximately 36.5 x 28.5 x 29 cm and can hold approximately 24 500ml PET bottles or 40 350ml cans. The 20L soft cooler bag measures approximately 33 x 24 x 26 cm and can hold approximately 20 500ml PET bottles or 30 350ml cans. Made with materials suitable for outdoor use, it can be conveniently used in a variety of situations such as park outings, BBQs, picnics, outdoor activities, camping, shopping, cherry blossom viewing, fishing, sports days, short trips, watching events, shopping, and as a lunch bag. The Kollea cooler box is a large-capacity, high-performance insulated bag that is perfect for outdoor activities and everyday use. ・30L large capacity This spacious storage bag is perfect for picnics and BBQs with family and friends. It can hold 24 plastic bottles or 40 cans. • High-efficiency cooling and heating Quadruple protection with waterproof aluminum foil, 5mm EPE cotton, 1680D Oxford fabric, and PVC board. Keeps food at its temperature for extended periods. • Leak-proof and waterproof design The aluminum foil seams are tightly sealed, maintaining the cooling effect for a long time. The outer Oxford fabric is highly waterproof and extremely durable. • Portability With a padded handle and adjustable shoulder strap, you can carry it on your shoulder and keep your hands free. When not in use, it can be easily folded and stored. ・ Versatile and useful It's perfect for a variety of occasions, including playing in the park, barbecues, picnics, fishing, and shopping. The quick-access opening is especially convenient for quickly retrieving items. Kollea cooler bags are perfect for a variety of occasions, including camping, playing in the park, BBQs, picnics, fishing, cherry blossom viewing, and sports days, and are also a reliable companion in everyday life. Make your outdoor life more fun and convenient with the large-capacity and practical Kollea soft cooler!