Promax SP-1 Seatpost Reservoirs with blades that change safely

with blades that change safely and easily at the push of a button

The cVest carries the US Coast Guard Certification through testing by Underwriters Laboratories (UL)

Adjustable hook-and-loop cuff tabs

Open a bottle

Promax SP-1 Seatpost Reservoirs with blades that change safelySP 1 2 Piece Seatpost The SP 1 seatpost is our tried n true 2 piece design made to work on any bike, any ride. Combining a lightweight, 2014 aluminum alloy shaft and a cold forged, aluminum alloy head, it delivers ride after ride and looks good doing it. Length 400mm Diameter 26. 8mm, 27. 2mm, 30. 9mm, 31. 6mm Offset 20mm Material 2014 Series Alloy