Cooler bags can be used for outdoor picnics or daily life. They are used to hold various foods and maintain the temperature and freshness of food. When purchasing ice packs, you can start from the following aspects:

1. Cold insulation performance: Cold insulation is the most basic function of ice packs. At present, the more common insulation pack materials on the market are mostly non-woven fabrics and aluminum-coated pearl cotton, which can provide good thermal insulation effect.

2. Durable performance: Outdoor ice packs should have excellent impact resistance, not easily broken when heavy pressure or impact, and will not leave scratches. The outer material of the ice pack is generally strong and durable Oxford cloth or polyester, which is more wear-resistant and durable.

3. Sealing performance: This is a point that must be considered when choosing an ice pack. Although products from different brands are sealed differently, excellent sealing is a must for the long-lasting freshness of stored food. The international seal measurement standard is evaluated by the moisture permeability test. The moisture permeability of high-quality insulation bags is 200 times lower than that of similar products, which can keep things fresh for a longer time.

4. Environmental performance: The inside of the food warehouse is made of aluminum foil, which is a food-grade environmentally friendly material, non-toxic and tasteless, and can be directly contacted with food.