Ideal for business travelers, the street walkers and families on vacation, this set of four bags vacuum seal enables up to two times more storage space, whether in a suitcase or backpack or in a closet, ready for the next trip. To use, simply add the items to be preserved and end zipper, roll the air through the valve of a way to "shrink" the items stored in the inside. The scholarships do not only compress bulky items for a more compact storage, but also to create an airtight and waterproof to protect against dirt, moisture, mold, insects and odors. Furthermore, transparent bags can increase the speed items through security checks at airports, and reusable design means years optimum space