Three cases, three trip lengths, and the numbers behind them are worth knowing before the colour is. The 20-in case measures 13 in by 8.5 in by 22.5 in and holds 42 L at a case weight of 5.5 lbs, rated airline standard carry-on for trips of 1 to 4 days. The 24-in case measures 15.5 in by 9.5 in by 27 in and holds 69 L at 6.5 lbs, going as checked baggage for 4 to 7 days. The 28-in case measures 20 in by 12 in by 30.5 in and holds 99 L at 8 lbs for 7 to 9 days, also checked. Together the blue set weighs 20 lbs empty. Security is built in rather than bolted on: each case carries a secure 3-digit combination lock, so a code is set once and the shell stays shut through handling with no separate padlock to be cut off and no key to lose. The shells are ABS with a robust hardshell that is scratch-resistant and impact-resistant, giving reliable protection with a clean finish, and every case rolls on 360 degree double spinner wheels that stay silent, smooth, reliable, and flexible under a full load. A sturdy adjustable telescoping handle sets towing height and reinforced grab handles make lifting more comfortable. Inside, multiple compartments keep belongings tidy and accessible behind smooth zippers that open and close without snagging. No assembly is required, and the nesting design stacks the smaller cases inside the larger for space-saving storage between trips.