Biaggi's Zipsak Carry On is a very convenient spinner travel case lightweight with fold-up abilities for easy storage. Each lightweight bag folds in a Z-Fold for easy storage under the bed. on the top shelf. or in a drawer. The 4 multi-directional spinner wheels are great for ease of mobility. Lightweight. sturdy construction and modern styling created by the durable krinkle oxford nylon. Premium component materials are designed for extreme activity. Each ZipSak piece folds up to an ultra-compact carry bag. Perfect for space restricted lifestyles as it folds so compact to fit on any shelf or drawer.