Perfect for sporty Trekking road & MTB. The 601saddle adjusts according to body weight! The saddles dampened lateral tilt allows it to follow the biomechanical movement of the pelvis on each pedal stroke. This results in a decrease of pressure on the seat bones & a mobilization of the spinal discs. The same technology as the 611 active; the shape of the 610 active fits perfectly for more upright & moderate riding positions. As do all SQlab saddles the 610 active comes with a lowered saddle nose. The lowered saddle nose of SQlabs stepsaddle design was developed by SQlabs head of R&D Dr. Stefan Staudte (Urologist & Extrembiker) to distribute the bodyweight by medical view points. More freedom lesser pressure with the SQlab Stepsaddle Concept! The lowered saddle nose of SQlabs stepsaddle design was developed by SQlabs head of R&D Dr. Stefan Staudte (Urologist & Extrembiker) to distribute the bodyweight by medical view points. Rails Cr Mo Tube Alloy Cusion K18 B78 Upholstery Marathon Foam Gel Elastomere (exchangeable) soft medium hard