SQLab 621 M-D Active 2. 1 Saddle Maximum Relief The M-D line stands for maximum relief of sensitive areas. The SQLab 621 M-D Active 2. 1 Saddle offers the optimal pressure distribution according to medical criteria for city bikes with a slightly forward bent to a very upright sitting position. This model has 85% of the highest relief for the perineal area and prostate from the entire SQlab product range. The Active technology allows the saddle to move with your pedaling motion for increased comfort. Features M-D line means you'll get maximum relief in sensitive areas Active technology allows the saddle to follow your pedaling motion for increased comfort Perfect for trekking and touring SPECIFICATIONSDimensions (Lx W)180mm / 210mm / 240mm Cover Microfiber Shell Polycarbonate Padding Foam Rails Chromoly Intended Use Trekking, Touring, Comfort Weight- | Sqlab | 621 M-D Active 2. 1 Saddle | Black | 24Cm