Dhurries are easily portable being light weight and foldable. The stock is both retractable and foldable. It also utilises an easily accessible towing device located behind the foldable registration plate holder. The barrels were stowed on platforms over the tracks with foldable outer rails. These were often mounted in pairs behind a foldable flat windshield. The big design improvement is the foldable frame which increases portability. These were foldable, and thus portable; and the Royal Engineers improved them further. Other improvements include increased pad size on the forward grip and foldable backup iron sights. It had heavier full-floating axles and a foldable, vertical, flat windshield. The frames' geometry is generally similar to that of BMX race or foldable city/touring bikes. Again, travelling with a foldable bike is easier. Kevlar beads are used on expensive tires, and these are also called "foldable". The Wetzer Stickboard was a narrow skateboard with a foldable pole on the nose. The Mate X is Huawei's first foldable device. In late 1998, the Accord was equipped with foldable mirrors.