The rolltop is expandable and the volume can be increased by up to 1.2 gallons (3 liters).  

A compartment at the bottom of the bag with 2 media ports is a great place for a power bank or eSkate battery.

Other useful features include a padded laptop sleeve, multi-purpose mesh side pocket, airpod/mouse zip-pocket, large side zip-pocket,  a hidden air tag sleeve and a secret stash area in the double bottom that is big enough to hold a passport, credit cards, money, keys, etc.   You'll also enjoy the bottle opener zipper head at the end of a long day on your skates.

Everything you need plus classic GC detailing.

Features:

Dimensions: H19” x W 13” x D 11” (H 48 x W 33 x D 18 cm)
Expandable to 24” height  (62 cm)
Zippered skate holder
Outside compartment for shoes, yoga mats
1 Year warranty