Thermal/Cooler Insulated Lunch Bag, WITERY Thicken Oxford Insulated Thermal Cooler Lunch Bags/Lunch Box Sack Picnic Storage Carry Case Pouch/Tote Bag Lunch Kit Can be used with or without ice pack Easy to clean, can be folded for convenient storage Insulated to keep your food and beverages fresh, provide good insulation effect Stylish appearance, bright colors, fashionable bag, portable, lightweight with hand strap Keep warm time: up to 5 hours (with Hot or Ice bag ); Keep cold time: 8 - 10 hours ( with Blue-ice can keep cold time 12-20 hours )