The A727 series is an Eco- Friendly hard sided luggage set. The exterior is a high quality ABS which 70 % is made from recycled material with a diamond pattern matt finish to reduce scuffing. Each upright is expandable to increase your packing capacity by up to 25 %. The interior is fully lined and divided into two sections . The set consists of a 28 inch , 24 inch and 20 inch upright on double swivel wheels .