12 pcs Storage Bags:6 pcs large bags 60x40cm, 6 pcs medium bags 50x35cm, the two different sizes are available to store clothes according to your need. Made of PA and PE Materials Anti -microbial:High quality storage bags are airtight and durable, and you can use the bags for a long time. The vacuum bags are transparent, and you can find the clothes directly. Easy to Use:No need for a pump, the storage bags are ready to use, the air evacuation in rolling the bag, you can store the clothes in the bags then put the bags in the suitcase. Space Saver:Vacuum storage bags can save 80% more space, they can protect almost all daily items from dust and moisture, including clothes, pillows, towels, linens, etc., and you can put the small bags in a suitcase for travel, a closet at home or at the store. Convenient and simple. Usage:First put the clothes in the bag, do not roll the clothes. Avoid filling the bag, leave approx. 5 cm between clothing and zipper. Then compress the bags to squeeze the air out. Finally, unroll the compression bag or roll the bag as needed, and put the bag in a suitcase or furniture.