MISSION PEAK GEAR Sequoia 2700 45L Internal Frame Hiking Backpack Daypack, PFS Polymer Form Suspension, Ripstop Nylon, Waterproof Rain Cover, Trekking, Camping, Travel, Backpacking, School, Laptop Bag PFS, Polymer Form Suspension allows air flow and minimize sweat on your back. Used on high-end backpack like Osprey. Made with High Quality Rip-Stop Nylon Fabric which is More Durable, Weather-Resistant and Stronger than Polyester fabric you normally see on the cheaper backpacks. Padded Laptop Sleeve Fits Up to 17" Laptop. Loaded with features like Expandable Chest Sternum Strap with Whistle, Hydration compatible up to 2 liters bladder (not included), Rain Cover, Reflective Strips, SBS zippers and HQ Buckles. Mission Peak Gear Exclusive 12-months Warranty and Friendly Customer Service. We are here to build a long lasting company.