Product description Smooth Zipper SBS metal buckle, more durable. Whistle Buckle Whistle buckle allows you to blow your whistle to ask for help when you encounter an emergency when you go out. Side Fixing Strap It can be used to fix water bottle or other items in the bottle holder, and its length can also be adjusted to keep the items in the backpack stable. Adjustable Chest Strap The position can be adjusted as needed. Previous page Travel Commute Easy-hike Next page Airplane Friendly Design: With dimensions of 10"x8.6"x17.5" (LxHxD), allows the travel backpack to fit in overhead compartments or under seats on airplanes, making it versatile for all your travel needs Well Made & Sturdy: The compact backpack is made from highly rip and water repellent nylon fabric to provide strengthen and long-lasting performance with minimal weight (1.4lbs). Very high quality construction with scratchproof fabric and strong stitching Multi-compartment: The backpack for men women includes a spacious main compartment with a laptop sleeve that can accommodate laptops up to 15 inches, 2 inner slip pocket, a front small vertical zipper pocket, and two side pockets making it easy to organize your items Max Comfort: The soft padded mesh back panel and shoulder straps allows for air convection and heat elimination, providing maximum comfort even long treks, while the adjustable chest and waist strap stabilizes the load throughout the day Design for: The 30L backpack is good for a overseas plane trip, 1-3 day city excursion, easy hiking, weekend getaway and daily use for men and women. It also can be a great gift option for your friends, families and colleagues › See more product details