Is this bag can lift lots of heavy stuff?

Yes, I used it to travel to Thailand last month. I put my laptop, my drone,my camera, and some clothes. It holds tight. Very well made and sturdy. The stiches were solid. Highly recommend

Is this bag can cfit underneath the seat on a flight ?

Yes, I used it a lot and it's just perfect! It fits the measurements required for personal item in most airlines and it's just the perfect size to fit all I need in my week long trips.

What are the 50l bag dimensions? Expanded dimensions (19.5x14x9.5 in item description are no more than ±42L

I think the dimensions in the listing are pretty close - it gets about 2 inches deeper when expanded. I can't explain how they managed to get 50L out of those dimensions, or 40L when not expanded, for that matter, but the linear measurements seem pretty close, even if the volume is "optimistic". Maybe if you stuff the thing and all of the pockets just short of busting the zippers? To use it as a carry on, it is the linear dimensions that matter. For non-air travel, a little more volume might be helpful depending on your needs and space. It's a really nice bag to travel with, the only annoyance is not having a dedicated pocket to stow the backpack straps in when using it as luggage.

What are the 50l bag dimensions? Expanded dimensions (19.5x14x9.5) in item description are no more than ±42L

I don’t know exactly but it expands and usable during trips.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Carry On Backpack, Expandable Extra Large Travel Backpack for Men Women | 40L-50L Expandable, TSA Flight Approved, Shoe Compartment, Anti-Theft, Lightweight 17.3" Laptop Backpack, Travel Gifts, Black

Product ID: 497836675

🎒50L expandable capacity

👟Dedicated shoe compartment

✈️TSA 180° lay-flat laptop access

₨47550

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎒 Travel smart, pack big, and fly hassle-free with the ultimate carry-on companion!

FLY THROUGH SECURITY - TSA-approved 180° lay-flat laptop section lets you breeze through airport checkpoints hands-free.
PACK MORE STRESS LESS - Expandable 40L to 50L capacity fits all your essentials for 3-5 day trips without the bulk.
ORGANIZED FOR EFFICIENCY - Multiple pockets including a 17.3" laptop sleeve keep your tech and travel essentials perfectly sorted.
BUILT TO BRAVE EVERY JOURNEY - Water-repellent, anti-theft design with reinforced stitching and durable zippers for daily commutes or global adventures.
SEPARATE YOUR SHOES STAY FRESH - Bottom shoe compartment keeps dirty shoes or gym gear isolated from your clean clothes.

The Carry On Backpack is a versatile, expandable 40-50L travel backpack designed for professionals on the move. Featuring TSA-approved 180° laptop access, a dedicated shoe compartment, and water-repellent durable materials, it combines smart organization with travel-proof durability. Lightweight yet spacious, it fits overhead bins on major airlines and keeps your essentials secure and accessible for 3-5 day trips.

Specifications

ASIN	B0BDLH7K67
Age Range Description	Adult
Apparel Closure Type	Zipper
Apparel Fabric Stretch	No Stretch
Apparel Fabric Weight Class	Lightweight
Backpack Design	Laptop Backpack
Best Sellers Rank	#245 in Laptop Backpacks
Brand Name	Gieury
Color	Black
Compatible Device Size Maximum	17.3 inches
Customer Reviews	4.7 4.7 out of 5 stars (2,544)
Embellishment Feature	Cord
Fit Type	Regular
Fit to Size Sentiment	Positive
Import Designation	Imported
Item Dimensions D x W x H	8"D x 14"W x 20"H
Item Shape	Square
Item Weight	1 kg
Lining Description	Polyester
Material Type	Polyester
Model Name	Laptop Backpack
Number Of Pockets	7
Number of Compartments	7
Number of Items	1
Other Special Features of the Product	Anti-Theft, Checkpoint Friendly, Convertible, Expandable, Laptop Compartment, Water Resistant
Outer Material	Nylon
Pattern	Solid
Pocket Description	Bottom Shoe Storage Pocket
Product Care Instructions	Hand Wash Only
Product Style	Carry on
Recommended Uses For Product	Travel
School Type	College
Shell Type	Soft Shell
Size	2X-Large(20"x14"x10")
Sport Type	Hiking
Storage Volume	50 liters
Strap Type	Adjustable
Subject Character	Travel
Unit Count	1 Count
Water Resistance Level	Water Repellent

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