If your seatpost doesn't stay in place, first try adjusting the clamp knob. During installation, align the reference marks and tighten — once set, the upper round carbon tube won't need frequent adjustment. Use the larger lower tube for daily height changes. If the knob is too tight or loose, use a hex key to adjust the resistance. #biketips #carbonfiberseat #aniwowbike #aw16 #foldingbike | Aniwow Bike