Features: It can keep cold food for 5-6 hours. The inner layer is waterproof and leakproof. It has a super large capacity ice pack. Large bags can be stored with more heat preservation and cold protection effect can be placed drinks, fruits, and other inner foil material, more environmentally friendly. Using high-quality and high-density Oxford cloth wear-resistant and tear-resistant, moisture absorption, anti-sun, feel comfortable. 3. Double-walk sewing technique, sewing adopts advanced double…