I bought this seatpost for a new build but never installed it on a bike. This brand is no longer exist, it's renamed to Porte over the years but the products are the very same. I'm using these products, wheels, seatpost and handlebars for years and never disappointed. They are very lightweight and durable. This seatpost is 400mm and just 115g
New product costs 240 eur https://www.rideporte.com/product-page/seatposts