By using Kevlar for the NePlusUltra rim strip Rox increases the durability of the already popular SuperDutE rim strip while only increasing the weight by a gram and a half per wheel. The Kevlar rim strip is backed with adhesive keeping the strip firmly in place.
After working with Rox tape for years we're happy to work with a stronger version suited to long term use in not only road bikes but both mountain and cyclo-cross bikes. Of course if you are really counting grams the Ultralite rim strips are the lightest on the market.
The NePlusUltra rim strips are sold per rim strip and are long enough for 700c and 29er wheels. They can also be cut for 26" mountain bike wheels.