SEMSTY Hiking Backpack, 30L/40L/50L Expandable Hiking Backpack for Men and Women, Travel Camping Backpack Flight Approved

SEMSTY specializes in producing High quality & Acceptable price backpack, this expandable backpack is durable and multifunctional
You too can take it to the plane as a carry on, the expanded mode(45L) will meet your need for necessaries.

Details:
Before extension:14 x 8 x 21.5 inch (40L). After extension:14 x 8 x 25.5 inch (45L)
【Expandable & Extra Large Capacity】This mountain climbing daypack may also be expanded by the use of the zipper at the bottom(from 40l to 45l). Roomy enough for a CARRY ON. The side buckles makes your stuffs secure and makes the backpack now not too bugling even it is fully packed. Multi-compartments permit you to organize all of your essentials like clothes, tech accessories, camping supplies, snacks, books, gears, and so on. Best possible for out of doors activities.
【Upgraded Design】The entire zipper and stitching are reinforced, NO WORRIES ABOUT ZIPPERS STOP WORKING AFTER SLIGHTLY USED. Adjust the chest & waist straps to higher suit your frame. Use the out of doors straps to hold your sleeping or other gears.
【Comfortable & No Back Pain】The back panel has soft padding and covered with breathable mesh, You'll still feel comfortable even wearing the backpack for a very long time way to the ergonomically design. The straps are also product of breathable mesh to lend a hand cut back pressure at the shoulders. Best possible for mountain climbing, camping and go back and forth.
【On a regular basis Backpack】Best possible for On a regular basis use. You'll take it as a mountain climbing backpack, college backpack, casual daypack, book bag, backpacking backpack, go back and forth backpack, trekking day bag, hunting bag, mountain climbing backpack & cycling backpack. Suitable for women / men / youth.