Feature 1COLD HOT INSULATION: This backpack has thermal and cold insulation function, with good waterproof effect, which is very suitable for outdoor use. 2OXFORD FABRIC: The backpack is made of high density oxford fabric, which is wear and scratch resistant, fully protecting the internal items. 3ALUMINUM FOIL: The lining is made of insulating aluminum foil, which ensures long term thermal and cold insulation, ensuring fresher food. 4LARGE CAPACITY: The backpack has a large capacity, can store drinkings, fruits, snacks, etc., the side mesh bag can hold bottles and folding umbrellas. 5FOR OUTDOOR USE: This backpack can be carried on your shoulder or carried by hand, and suitable for outdoor hiking, fitness, camping, picnics, etc.Specification Item Type: Backpack.Product Material: Oxford ClothHeight:44cm/17.3i,nWidth:28cm/11in,Thickness:14cm/5.5in Package List:1xBackpack.Note:Please allow errors for manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store