What more can you say about Thomson seatposts! They are the standard that all other posts are measured to. They are light, simply designed and strong built to take all the abuse a mountain bike can muster yet light enough for road use. Machined from a solid piece of 7000 series aluminum and a natural ellipse bore inside tube for optimum strength to weight ratio. Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Every component of the Thomson seatpost is 100 percent American made. This includes all fasteners and forgings. When you need the best seatpost that will last your choice has to be the Thomson Seatpost.