aokur Large Travel Laptop Backpack with Wet Bag Shoe Compartment,50L Expandable Flight Approved Backpack,17.3 inch Hiking Backpack for men women,Waterproof, Black

1[40L-50L
EXPANDABLE DESIGN]: The extra large carry on backpack with expandable feature gives you a spacious capacity experience. Normal state is 40L, dimensions are 20.1 x 12.6 x 8.7 inch. after extended is 50L, dimensions are 20.1 x 12.6 x 11.8 inch. You can expand the zipper and buckles according to your requirement
2[WATERPROO & DURABLE]: Travel backpack is made of water-repellent fabri and anti scratch material, effectively resist rainwater splashing, protect items from getting wet. The adjustable shoulder strap and backside with breathable mesh plentiful sponge pads can helps you relieve the stress from shoulder and back
3[CONVENIENT & PRACTICAL]: Business carry on backpack has external USB port with built in charging cable. offering you charge your electronic device by your own power bank any time and anywhere. there's a luggage strap makes it fixed on luggage for easier carrying. The hidden anti theft pocket on the back side can protect you personal valuable item such as passport and wallet.
4BUSINESS TRAVEL BACKPACK & TSA APRROVEDDesigned for airplane traveling, making you quickly through the airport security and keep items tidy. Make backpack firmly fixed on the luggage lever, freeing your hands
5[CONSTRUCTION & DEMINSION]: one separate laptop compartment size is 18.5 x 11.8 inch fits 17.3 inch laptop. The main compartment can store 4-7 days travel gear such as clothes, shoes and daily supplies, perfect for business traveling, weekend getaway, daily commutes.
6U SHAPED BACK and HONEYCOMB STRUCTURE DESIGNU shaped and three dimensional ventilation design, comfortable wide breathable mesh shoulder straps with plentiful sponge pad help relieve the stress from your shoulder. Both sides of the shoulder strap with lanyard design, can hang sunglasses and other small pendants. computer backpack for women.