6-Piece Hard-Shell Suitcase Set - Expandable Lightweight Dual-Wheel Suitcases, Unisex. This comprehensive set includes four hard-shell suitcases in 16-inch, 20-inch, 24-inch, and 28-inch sizes, plus a travel carry-on bag and amenity kit, making it ideal for families and modern travelers. Each suitcase is made of premium ABS material, combining lightweight and sturdiness with excellent abrasion resistance and impact resistance. The robust hard-shell shell protects your belongings during transport, while metal corner protectors reinforce the edges, extending the suitcase's lifespan. Ultra-smooth 360-degree dual swivel wheels glide silently on any surface, easily navigating crowded airports and narrow aisles. The telescopic handle offers three height adjustments to accommodate travelers of different heights, minimizing fatigue.