Usage Tips:Package Included: 8 Travel Roll Up Storage bags (60x40cm), can create vacuum simply by rolling up the bags. They are perfect suitable space saving storage bags for trip, ideal compression bags for luggage. Easy to Use: Our travel vacuum bags do not require a hand pump or vacuum cleaner. You just need to manually roll the bags and then the air will squeeze out. Save 75% Storage Space for your luggage. Ideal Protection: Waterproof and airtight double zipper design protects your clothes from water damage, dirt and dust. Compression bags remove your excess air by hand rolling the air through a one-way pressure valve. Reusable and Durable: The vacuum storage bag is made of PA + PE material, which has higher stretchability and improved abrasion resistance, sturdy, tear-resistant.