"A backpack made entirely of polyester mesh. A design that is active both in daily and outdoor scenes. Material = 100% polyester F = Vertical: about 41 cm Horizontal: about 31 cm Gusset: about 12 cm The above size chart is a guide to the dimensions of each part. It is not the finished dimension of the product. We do not accept returns or exchanges for this product except for product defects. If the bag containing the product is damaged, a substitute bag (including other manufacturers) may be used. Please note that the main purpose is to protect products."