Today we are going to introduce Cooler Bag. There are lots of cooler bag brands on the market. Bunny will share some relevant knowledge about cooler bags with you in the following. Actually, a cooler bag can keep a constant temperature. In other words, not only can a cooler bag keep cold, but it also can keep warm. Therefore, the materials it uses are a kind of super thick insulated cotton which can play the role of thermal insulation.
http://www.baixiangjubag.com/i....nsulated-bag/cooler-
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