LIGHTWEIGHT & STURDY – The luggage cases are built with a lightweight, soft, durable and robust exterior casing. The cases are within the size requirements for cabin bags and weigh only 3.3 lbs, making them ideal aerosafe carry-on or holdall luggage for children. FREESTAND STOPPER – A free-stand stopper allows for the case to be kept upright in a stationary position. POLYURETHANE WHEELS – Soft PU wheels make for a smooth journey through airports.