Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

27.2mm 31.6mm MTB Bicycle Seatpost Road Bike Mountain Bicycle Cycling Seat Post Full Carbon Fiber Seat Post Super strong carbon fiber seat post to make your bike powerful. Features:Carbon fiber seat post and aluminum connect， the seat post head is strong and fatigue resistant.2 bolts design for easy adjustment.Necessary product for the bikes. Specifications:Material: Aluminum Alloy & Carbon FiberMode: 27.2mm， 31.6mm(optional)Color: Black=glossy mattt black=matteDiameter: 27.2mm/31.6mmItem Length: 350mm