A.SAKS Expandable Upright Boarding Bag

Yes, it is specifically designed to fit under most airline seats. With dimensions of 19.88 x 13.36 x 8.64 inches, it meets the standard requirements for under-seat storage on the majority of commercial flights.

The bag features an external USB port that allows you to charge your devices on the go. You will need to place your own power bank inside the bag and connect it to the internal cable, which then powers the external port.

The bag is equipped with a single EasyDown pull-up handle designed for smooth mobility. It is built to handle the rigors of frequent travel and daily commutes, though it is a single-pole design rather than a double-pole system.

The expandable design allows you to increase the depth of the bag when you need a little extra room for souvenirs or bulkier items. While the exact volume increase isn't specified, it provides enough flexibility to accommodate a change of clothes or additional travel essentials.

This bag uses inline skate wheels, which are excellent for smooth surfaces like airport terminals and city sidewalks. They are durable and offer a quiet, stable roll, though they are not designed for rough terrain like gravel or grass.

The 3-year limited warranty covers defects in materials and workmanship under normal use. It typically includes issues with zippers, handles, and wheels, but does not cover damage caused by airline handling or normal wear and tear.