The thermal backpack's temperature control isn't as effective as a standard polystyrene box, but it's still practical. Regrettably, the warranty period became much shorter after I received it, thus, I can't provide a more comprehensive review now. It was sent by the store two days following my payment. For keeping items cold within the backpack, opt for the light gray color; conversely, the black one is better for maintaining warmth.

The product matches the description. The item was received earlier than expected. The bag seems to be of good quality.

Thank you seller and transporter, it arrived ahead of schedule, very happy with the cooler backpack. I tested it with 1 hard ice pack, it lasted 11 hours, keeping everything cool for 11 hours. Checked maximum cold. I recommend it, it's very good. Thanks, greetings 🙂👍🤗