“I liked the construction, andf the adjustment mechanism and fact you pre-adjust before fitting on vehicle for a perfect fit. However, having positioned on car (Range Rover Sport) correctly the noise was unbearable. Even without a roof box and no load whatsover on the bars - the noise was unaceptable over 60mph for a long journey. So we never uesed them - and opted to cram the boot fuill of stuff than put upo with the noise. Not great for the range rover sport. note - I don't have roof rails so this was roof fitting saround door frame clamp. I fed back to roofbox comany but never hear back”