12 PACK Space Saver Vacuum Storage Bags 4 Medium size + 4 Large size + 4 Travel Bags Quantity = 12 bags total. The package includes X4 Medium (28"X 20"), X4 large( 35"X 28") and X4 Travel Bags (40cm x 60 cm). Vacuum storage bag features : Comes with vacuum suction valve on each bag to draw out the air in the bag by vacuum cleaner or pump. Store those bulky items and reduce volume up to 75% as seen on TV! Airtight and waterproof seal keeps out moisture and dirt. Reusable. Roll up Travel bag features : Instantly create extra space in your suitcase. Perfect for storing dirty laundry while travelling. Reusable. Roll out the air through the patented 1 way valve at the bottom of the bag. No vacuum needed. Our every storage bag comes with complete packaging with full instruction. Double zipper seal with material PA + PE. Our storage bag is 10% larger in the same listing size compare to others.