18/22/26/30/34 INCH PLEASE CHECK CABIN SIZE WITH AIRLINE BEFORE YOU TRAVEL. Ripstop polyester fabric. TSA combination lock ensures belongings are safe. Four double 360 degree spinner wheels for easy carrying at the airport, on the road or at hotel check in. Sturdy trolley system. 26/30/34 inch with extension, increasing the storage capacity. Two pockets on the front, five pockets inside for separate storage.