The XLab Stealth Pocket 300 is lower than the Stealth Pocket 200 and made specifically to work with the screw mount on the Cervelo P5 and only works on this screw-type mounting system. The 300 is a well-conceived aero bag for storing bars, gels, etc. that can be mounted behind stem or seat post. It actually reduces drag caused by the stem and headset spacers with its tapered, aero design profile.
Other details include a silver colored interior which makes it easier to see contents. A stretch mesh pocket in contrasting red color creates a divider for electrolyte tablets, salt tablets, cash or other small items. Its long and low design means it can store the longest energy bars.
Non slip surfaces underneath and on front of bag grip top tube and back of stem to keep the bag in place. The bag is located within easy reach while riding and there is a non slip rubber zipper pull. A one handed super-slide zipper makes quick grabs easy.
Specifically works on the Cervelo P5 screw mount