Please note that ONLY FAMILY SET has 4 pcs, please ignore the product’s title and select the set you want. 3 piece luggage set 20 inch,24 inch,28 inch upright, can be stored one into another.100% ABS, Lightweight yet extremely durable abs material. Spinner wheels, multidirectional smooth and silent 360°wheels. Upgrade With TSA-Accepted Lock for security and peace of mind. Sturdy ergonomic aluminum telescoping handle Interior mesh zip pocket and elasticated,Squared full-capacity design