Easy packing. Spacious main packing compartment with X-shaped compression straps and zippered divider wall makes for easy packing Durable materials. Built from 100% virgin polycarbonate that's break resistant, lightweight, and scratch resistant. Swiss engineered dual-trolley system is of aviation grade quality for improved stability and comfort. Premium features. Large 60mm dual caster Hinomoto wheels with silent tires ride easily over any terrain. Stable telescopic handle system, heavy-duty Ykk zippers and integrated TSA approved combination lock provide added security. Specifications. Dimensions: 18.5"W x 27.2"H x 11.4"D [expands to 13.0"D], Weight: 8.9 ibs, capacity: 71 L [expands to 83 L] 11.4x18.5x27.2