Constructed of durable 600 denier polyester. Each set contains 1 ea: 21/25/29 spinner * Four, multi-directional spinner wheels for easy mobility. Rolls upright so there is no weight on your arm. * Padded top and side carry handles provide comfort when lifting a fully packed case * Interiors feature multiple pockets for organization and cases expand for added packing capacity. * Front panel pocket for last minute items