• Nylon waterproof material
• Zipper closure
• 35L~40L BIG CAPACITY: A great hiking backpack for a 1~3 days' hike or short trips. One main compartment, one zipped front pocket, two side pockets as well as external attachment points. Spacious pockets keep all things organized and separated. Enough storage space for your laptop, book, shoes, clothes, towel, and journal, etc
• BEST TRAVEL CHOICE - The lightweight backpack can easily fold up into a small pocket (Sandwich size). So you can easily pack it in your suitcase to use once reach your destination as an extra bag for the trip. At airports, it helps avoid overweight charges, simply unfold from your luggage and use it as a carry-on for your excess baggage.
• INCOMPARABLE QUALITY - Made with thick sturdy and water-resistant material with durable abrasion resistant SBS metal zipper available plus strengthened stitching, make it the best hiking and travel backpack.
• SAFETY REFLECTIVE+WHISTLE DESIGN: Our backpack is equipped with a reflective strip design on the front to make outdoor night travel safer, in addition, the anti-slip shoulder strap on the chest is equipped with a unique whistle button, which can blow the whistle to send a signal when encountering danger。
• BEST GIFT TO FAMILY OR FRIENDS: Ultra-light, Ultra-durable, Ultra-awesome daypack perfect for hiking, camping, traveling, overnight trip, day-to-day use, and more. A great gift for men, women, any travel enthusiast

Please allow 0.5-1inch differences due to manual measurement.