【365-Day Usable, Large-Capacity Insulated Bag】 The 30L large-capacity cooler bag from .West is a reliable item that can be used year-round. It can be used in many situations, such as outdoor activities, sports, shopping, and travel. Despite its 30L capacity, it weighs only 990g, making it easy to carry. It has a shoulder strap, so it can be used in 3 ways: by hand or over the shoulder. It can be folded compactly with the belt, so it doesn't take up space when not in use. With its stylish design, it is widely used from everyday use to outdoor activities. 【5-Layer Structure x Waterproof Design】 Achieves professional-grade cooling performance and durability. 600D Oxford waterproof fabric is used for the outer layer, and PP board, EPE, non-woven fabric, and PEVA are densely layered. The 5-layer structure completely blocks the effects of the outside air, and the ice melts 1.5 times slower than commercially available products. The surface is abrasion-resistant, and the interior is environmentally friendly and antibacterial, while the special hot press technology achieves a seam-free design, proving complete waterproofness even in a 24-hour water immersion test. It can maintain low temperatures for a long time with ice packs inside, making it ideal for storing fresh food during fishing and camping. 【With 5mm Plastic Bottom Plate】 Regular soft cooler bags have a problem in that the bottom sags due to the weight of the luggage, but the .West soft cooler bag comes with a special antibacterial bottom plate to solve this problem. 【Blocks Cold Air】 There is an opening at the top (quick serve opening), so you can quickly and easily take out items inside without letting the cold air escape from the cooler. In addition, the main W zipper is designed to be covered with insulation foam to prevent cold air from escaping. Carabiner loops are installed, allowing you to hang items often used at campsites, such as Sierra cups and small flashlights. Leave the food for a family of four for the whole day to this .West cooler box. 【Portability】 It has a handle that can be held with one hand and a shoulder belt that can be carried over the shoulder, making it easy to carry. When not in use, it can be folded compactly, so you don't have to worry about storage space. The cooler bag is designed to be folded compactly after use and stored, and it can be easily folded and stored with the fixing buckles attached to both sides. The shoulder belt is removable and can be used by hand or over the shoulder as needed.