It does seem to grip the rails well enough and I dont think there is any issue with them staying on although havent yet used with full roof box. Did the job Make sure youre ordering the right one for your headset. Hate the "Headphone/mic combo" . Those ones, with their more-airspaces-in-the-headband will probably be noticeably cooler in the summer, for shaved-head people. I managed to initialize virtual 7. Nice shoe, doesn?t look clunky big as some runners lookLove Vionic shoes If you want exceptional call quality, look no further than any Jabra product. It is comfortable mouse feels better than my previous rival 650. Top straps were stretched out.