Description:
Material: Carbon Fiber + Aluminum Alloy
Length: 350/400mm
Outer Diameter: 27.2/30.8/31.6mm 
Appearance:3K Glossy/3K Matte
Weight: about 230+-20g (different sizes with different weight ) 
Maximum load: 120kg
Bike Type: Mountain/Road Bike
Package Content: 1 x Bike Seatpost