Airlines Approved Carry on Backpack:
Color: Purple Blue
Normal Size: 21*14*7inches Capacity: 33L
Expanded Size: 21*14*9inches Capacity: 40L

Characteristics of the carry on luggage backpack:
1.40L travel backpack offers a large storage space for clothes, laptop, toiletries and daily necessities, travel accessories etc
2.Inner adjustable straps in the main compartment are adjustable in length and could be changed from "high" to "low" cinch positions, keeping your travel essentials from disarrange.
3.Separate mesh organizer pockets are used to store passports and chargers or any other travel essentials.
4.The wet bag is made of high density waterproof material can help you to separate dry items and wet items(wet clothes or towel etc).
5.One convenient front pockets: for small items like ipad, notebook, e-book, earphone
6.The expandable backpack for travel comes with extended function, unzip the zipper on the main compartment to increase capacity from 33L to 40L

Tips for Better Travel with This Bag:
1.Two padded grab handles are set on the top and the side of the women travel backpack, which allow an easy switch between backpack and suitcase
2.A luggage strap can be used to fix the carryon backpack on the suitcase and slide onto the luggage vertical handle tube for easy carrying
3.Compression straps are carefully placed to provide maximum compression and reduce stress on the zippers.
4.Full expansion zipper adds over 15% of the packing space, very useful to get an inch or two more of vertical space if needed
5.Adjustable sternum strap can help relieve the stress from your shoulder
6.Breathable sponge mesh design on the backside and shoulder straps help for the air convection, ventilation, and heat elimination
7.The TSA lockable double zipper ensures the security of your airline approved luggage backpack