Able to keep it warm or cold effectively for 8-12 hours (ice cubes required), the ice pack can lock the temperature with three layers of insulation for you to enjoy freshness and delicacy anytime, anywhere. Suitable for daily picnic or camping, it can be carried by one shoulder for you to enjoy a good time. With its 35L large capacity, it can meet the camping needs of families and friends for camping. Besides being a picnic insulation bag, it can also be used for daily storage.