EASY TO USE: No need for vacuum machine or pump.The end line has one-way ventilation holes. Simply place your clothes in the bag and roll the bag through the opening to the bottom, forcing the air out through the one-way vent at the bottom of the bag. No other equipment is required and easy to use SPACE SAVER BAGS: Double zip design for airtightness, slide and press clips to seal the compression packing bag.They are built to withstand repeated use and maintain their airtight seal, keeping your items protected for extended periods SAVING STORAGE SPACE: The travel vacuum bags effectively compresses your clothes and luggage, saving up to 75% of luggage space, easily pack your wardrobe and luggage. Great for travel or storage PREMIUM MATERIALS: Made of thick and transparent plastic for easy differentiation of what is stored,which is resistant, practical and convenient. Easy storage while protecting your clothes from water, dirt, odour,dust or other damage DIFFERENT SIZES: Available in 8 pack compression bags, containing 4 different sizes, 2pcs of 35x50cm/ 13.819.7in, 2pcs of 40x50cm/15.7x19.7in, 2pcs of 40x60cm/15.7x23.6in, 2pcs of 50x70cm/19.7x27.6in. Solve the problem of storing different sizes of luggage or travel essential