Featuring our patented One Touch CX™ Compression-Expansion Technology Choose the medium expandable spinner for effortless 360° navigation on 4 re-engineered double swivel wheels and enough packing space for any 4-8 day trip. Utilizing CX technology to expand up to 25%, then compress back down to original size to prevent your contents from shifting during transit. 26 in. x 18 in. x 12 in. check through luggage 11 lbs