i want to know, hou many litter can put on the backpack?

Will, a liter is a measure of capacity. So, as was noted by andersonvom, this backpack's capacity is 31 liters (or in the US, about 8 gallons). Backpack capacity is often measured in liters -- check out REI if you're interested. In cubic inches, its capacity is 1908...

Does it fit a 17 inch laptop?

My laptop measures 16 x 12.5 x 1 and it did NOT fit even though this bag's measurements for the interior laptop compartment says: 17 X 12.5 X 2.5 inches. The zippers could not close over a corner of the laptop. It's because the bag is smaller at the top than at the bottom. The laptop is an Alienware Area 51m. Bummer. I had to return the bag.

What is the Max Weight Load? and how does it hold up to time?

Bought this based on glowing durability recommendations and it has proven true or me. I carry reasonably heavy loads for short trips multiple times a week and the pack looks near perfect after 5+ years. Also, it is comfortable under a heavy load. The strap padding and handle are well designed. My only complaint being the durability trade off is heaviness, about 3.6# empty. Am looking now for a new pack that has the strength/durability of this one, but lighter in weight.

Will it fit under the seat in an airplane?

I recently took this bag on a Delta business class flight, fully packed and stretched to the max. It did not fit under the seat, but I had the aisle and the space under the seat was about half that of the middle and window seats. It did fit nicely in the overhead compartment, and my +1 bag fit under the seat. Fully packed it does not exceed the carry-on limits.

Swissgear Unisex 1900 Scansmart Tsa 17 Inch Laptop Backpack Laptop

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🎒 Elevate your daily grind with the backpack that works as hard as you do.

COMFORT MEETS DURABILITY - Ergonomic padded straps, airflow back panel, and reinforced handles make heavy loads feel light.
ORGANIZED FOR EFFICIENCY - Accordion file holder, RFID-protected organizer, and removable key clip keep essentials instantly accessible.
TRAVEL READY CONVENIENCE - Add-a-bag trolley strap, quick-access pockets, and water bottle holders keep you prepared on the move.
ULTIMATE TECH PROTECTION - Padded laptop and tablet pockets shield your devices with style and security.
SEAMLESS AIRPORT SECURITY - ScanSmart TSA-friendly compartment lets you breeze through checkpoints without unpacking.

The SwissGear 1900 ScanSmart TSA 17-inch Laptop Backpack is a premium, unisex tech companion designed for professionals on the move. Featuring a TSA-compliant lay-flat laptop compartment, RFID-blocking organizer, and ergonomic comfort enhancements, it offers 31 liters of organized storage with durable polyester construction and water resistance. Perfect for business travel and everyday use, it combines security, convenience, and style backed by a 10-year warranty.

Specifications

ASIN	B01HNAC7J6
ASIN	B0B5FDFGFK
Age Range Description	Adult
Apparel Fabric Stretch	No Stretch
Apparel Fabric Weight Class	Medium Weight
Backpack Design	Laptop Backpack
Best Sellers Rank	374,077 in Fashion ( See Top 100 in Fashion ) 1,807 in Casual Daypacks
Brand Name	SwissGear
Closure Type	Zipper
Collection Name	ScanSmart
Colour	Heather Grey
Compatible Device Size Maximum	17 Inches
Customer Reviews	4.6 4.6 out of 5 stars (22,384)
Customer reviews	4.6 4.6 out of 5 stars (22,384)
Date First Available	10 Dec. 2010
Department	Unisex
Embellishment Feature	Plush Accent
Fabric Type	100% polyester
Fit Type	back
Fit to Size Sentiment	Positive
Global Trade Identification Number	00721427015834
Item Dimensions D x W x H	22.9D x 33.7W x 47H centimetres
Item Shape	Rectangular
Item Type Name	Laptop Backpack
Item Weight	3.3 Pounds
Item model number	19002115
Lining Description	Polyester
Manufacturer	SwissGear
Manufacturer	SwissGear
Manufacturer Part Number	19004415
Material Type	Polyester
Model Name	1900 Scansmart Tsa 17-inch Laptop Backpack
Model Number	19004415
Number Of Pockets	5
Number of Compartments	5
Number of Items	1
Occasion Type	Business, Everyday Use, Travel
Other Special Features of the Product	Laptop CompatibleWater Bottle Holder
Outer Material Type	Polyester
Pattern	Solid
Pocket Description	Water Bottle Pocket
Product Care Instructions	Hand Wash Only
Product Dimensions	22.86 x 46.99 x 34.29 cm; 1.59 kg
Product Style	1900 Scansmart Tsa 17-inch Laptop Backpack
Recommended Uses For Product	Security
School Type	High School
Shell Type	Soft Shell
Size	19-inch
Sport Type	Multi-Sport
Storage Volume	31 litres
Strap Type	Shoulder Strap
Subject Character	Sports
Theme	laptop
UPC	721427015834
Unit Count	1.0 count
Water Resistance Level	Water Resistant
Zippered Compartment Count	6

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