EXPANDABLE & LARGE CAPACITY: This extra large travel backpack with expandable feature offers you more packing capacity(Size: 17.32*12.2*6.7+1.57inch). Unzipping to get 40L storage then can easily hold packing cubes, make-up bag, outfits, camera bag and gear, which is ideal for men, women, weekend traveler, or occasional vacationer. This versatile travel bag meets airline personal-item requirements | LOTS OF POCKETS & 17.3 INCH LAPTOP AVAILABLE: Sinaliy travel backpack for men and women has a large laptop compartment with good thick cushion, which can protect your 17.3 inch laptop well. This backpack for travel owns large storage space with many hidden pockets. It also comes with two toiletry bags to carry your hair and bath products | WITH LUGGAGE BELT & ANTI-THEFT POCKET: Featuring the luggage belt on its back, business traveler could fit this traveling backpack right on the luggage suitcase, easier carrying. A hidden anti-theft pocket located on the lower back protects your valuable items, such as wallet, passport, ID card from thieves when traveling or lining up | LONG USING LIFE: Sinaliy mens travel backpack is made of lightweight water-resistant polyester and anti-scratch material, which can provide protection on drizzle days with good air permeability and heat dissipation. With sturdy zippers and decent stitching, this personal item backpack won't show any defects when on the go, ensuring you an unforgettable weekend getaway | CONVERTIBLE DESIGN: The carry on backpack is designed with hideaway padded shoulder straps which can be easily stored away in zippered back panel, transforming this personal item bag from carry-on duffel to briefcase style and provide you a more flexible carrying experience by using the side handle | PERFECT PRESENT: Sinaliy 40l travel laptop backpack - The best gift choices for Father's day Birthday, Valentine’s Day, Thanksgiving Day, Christmas, New Year for your father, boyfriend, husband, son, friends, etc. Best gifts for people travel, go to commute, business, hiking, camping