The lunch totes are made of neoprene, which is the material of wetsuit, they are thick and insulated, so it can keep lunch and drink cold.

FEATURE OF LUNCH BAG

INSULATED LUNCH BAG: This colorful lunch bag is made of 4mm thick neoprene materials, keeps food cold or warm for up to 4 hours, to stays fresh and taste. This reusable lunch tote keeps you from throwing away paper and plastic bags every day, protects the environment. It is eco-friendly and machine-washable and reusable insulated lunch bag is ideal for work, school, college, camping, picnic
LARGE CAPACITY: It fits most of your lunch containers, and it's foldable while no use. This large lunch bag is enough to carry your lunch boxes, snacks, fruits or drink
HEAVY-DUTY ZIPPER: We had tested so many zippers to got the best one. With smooth zipper, our neoprene lunch bag is guaranteed to give you years of daily use, it's super easy to open and close.
UNIQUE DESIGN: This amazing patterns and fashionable designs make your lunch more interesting. And the neoprene materials make it easy to clean and dry. The adjustable shoulder straps and soft handles help to reduce your burden.