Ground Control Rolltop Backpack – Black. The rolltop backpack features a front panel that securely holds skates. Zipped-up – this compartment doubles as shoe or sweaty clothing pocket; keeping your dirty items separated from the main, internal section. It can also be used to carry oversized items like a yoga mat or tripod. 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. 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. Dimensions: H19″ x W 13″ x D 11 (H 48 x W 33 x D 18 cm). Expandable to 24 height (62 cm). Outside compartment for shoes, yoga mats. GC Embroidery – Black on Black. At SkatesUSA our primary goal is to give our customers the best deals on longboards at the lowest price. That is our commitment to you, our valued customer.