1、 Pack of 10: 17 inches x 17 inches (approximately 40 cm x 35 cm) zipper design makes it easy to open, and has a good sealing performance, not easy to age.2、 The zipper design of this aluminum foil bag makes it easier to open. Moreover, the thermal insulation bag has good sealing performance, is not easy to age, and effectively keeps the internal articles tidy and clean.3、 The aluminum foil bag is made of high-quality materials, durable, non-toxic, tasteless and environmentally friendly. 4、 The environmental protection foil can provide heat insulation and low-temperature insulation, and can also maintain the freshness, so as to maintain a stable temperature environment of the food.5、 The aluminum foil bag is safe and healthy, suitable for storing snacks, pet food, necklaces, earrings or other daily necessities. Suitable for picnics, lunches, travel, camping and daily food preservation, etc.