100% pure pp material — high strength, drop-resistant, pressure-resistant, and durable, it’s stronger and more durable than abs.9-piece set — covers both carry-on and checked luggage, perfect for family travel, wholesale, and retail.saves shipping volume — nine sizes can be nested, allowing you to fit more sets into one container, saving on ocean freight costs.quiet and smooth experience — highly elastic pu silent wheels with 360° rotation for effortless handling on all road surfaces.oem/odm customization available — customizable logos, colors, sizes, packaging, locks, and more are available.best choice for wholesale and export — popular in south america, the middle east, africa, and southeast asia, and highly sought after by b2b customers.