CoZroom 12 Pack Space Saver Vacuum Storage Bags 4 Different size Space Saver Travel Compress Roll-Up Storage Bags Washable and durable Re-use many times, simply undo, let air out and start over again Vacuum storage bag features: Comes with vacuum seal suction valve on each bag to draw out the air in the bag by vacuum cleaner or pump Reduce volume of your items by up to 75%Ideal for duvets, pillows, winter/summer clothes, curtains and much more. Easy to store in the attic/loft, on top of wardrobe, under bed, garage or suitcases Easy to store in the attic/loft, on top of wardrobe, under bed, garage or suitcases Quantity = 12 bags total. The package includes: X5 Small (14"X 20"), X3 Medium (19"X 27") and X2 Large (27"X35") and X2 XL (31"x 47").