Heys Unisex-Adult Britto New Day 30 Inches Made of polycarbonate composite and has a zipper-released expansion system that allows for an extra 20% in packing capacity Has a lightweight aluminum push-button telescopic handle system with multi-stage locking heights 360 degree hinomoto spinner wheels allow for effortless motion in different terrains Features a fully-lined interior with zippered divider, buckled compression straps and zippered pockets 30x20x11.5