Set of 10 Compression Bags: 5 Medium and 5 Large, Hand-Roll, Vacuum Cleaner Not Required, Travel, Clothing Compression bags recommended for travel, hiking, and outdoor activities where luggage tends to be bulky, and for organizing clothes. Simply roll by hand to release the air. No backflow. Easy slider included; sliding the slider left and right over the zipper seals the bag. [Product Specifications] M Size: 30 x 40 cm (usable size 27 x 32 cm) L Size: 54 x 38 cm (usable size 35 x 46 cm) Material: Bag/Nylon, Polyethylene; Slider/Polypropylene 5 M Size bags: 490 yen 5 L Size bags: 590 yen 950