Twisted Dobby nylon Exclusive "SecuriTech" Zipper system 4x twin Spinnerwheels with 360 degree rotation Fully Integrated Lightweight Fiberglass FrameTSA Accepted lock Concealed "Add-A-Bag" Strap Recessed Extra long trolleyhandle made from Aircraft Grade Aluminum Reinforced corners and kickplate foradded protection against wear Fully lined interior Tie down straps 2"expansion for added packing space Integrated Privacy ID Tag Dimensions: 24.5"x 18" x 10" ( 2.5" exp)