Durable Lightweight polycarbonate composite. Locking push button handle system with channels for added strength. Deluxe multi directional 360 spin technology 8-wheel system. Full London Fog plaid linig. Interior has zippered divider and elastic tie down straps. Spinner uprights expand fpr additional packing capacity. Convenient top and side carry handles for easy lifting. Side feet for extra protection. Self repairing nylon zippers. Custom London Fog hardware.