Wotofo Xfiber Organic Cotton is first inspired by the ever-increasing needs of fast cotton preparation for your rebuilding convenience. The cotton we selected is of long fibers so that it wicks smooth and itâs not easy to pull apart. However, thatâs not the best part, the best part is that we put a sheath on one end of the cotton strip so as to function like the aglet on your shoelace, then itâs much easier to thread the cotton through the coils. Each cotton strip is ready-to-use with the proper cotton amount. The cotton features great absorption capability and better retention ability, freshly packaged to deliver the purest flavor.