V-Rack Seatpost Carrier

Very nice back rack. Would have even been better if it was a quick release for faster removal when not in use.

We need to prepare a backpack that doesn't interfere with the tires.

I think it's a great accessory for Brompton Bikes, but the design could be improved. The plastic upper stops could be made of metal, forming part of the same structure. The vertical tube could end up with a round shape, to replace the installation of plastic caps, which are easily damaged, break and arrive damaged in the packaging (it happened in my purchase). Additionally, you could design a suitable bag, that can be used with the "V-Rack", considering the maximum weight, that can have pockets and smart closures (I could help in the design if you guys want). A bag with certain characteristics, not very extensive, that does not hide the lower light of the Brompton.

Excellent product , rapid delivery

Excellent. My small panniers fit well. Improvements could be made e.g. lighter bracket, larger diameter clamp for large diameter seat tubes such as those on a birdy bike.