ITEM NAME:Now Bike Bicycle Cushion Shock Absorber Bicycle Saddle Suspension Device Bi I3K1 Now Bike Bicycle Cushion Shock Absorber Bicycle Saddle Suspension Device Bi I3K1 1.Aluminum alloy spring steel,not easy to get deformed,wear-resistant and high toughness 2.Silicone protective cover,good adsorption and high stability 3.With engraved scale on sides,you can adjust position 4.Easy to install and disassemble; installed between the seat cushion and the saddle tube,great shock absorbent Size:16 x 8.5 x 5cm/6.30 inch x 3.35 inch x 1.97 inch Brand:NOW BIKE Weight:352g Applicable:suitable for mountain bikes,road bikes,Fixed Gear and more 1.The bicycle saddle suspension device,its characteristic are the connecting mechanism and the suspension springs,the upper part of connecting mechanism connects to the saddle,the lower part of connecting mechanism connects to suspension springs. 2.Connecting mechanism can slide on the guideway of the upper suspension springs.3.You can choose the comfort level of suspension according to your model of bike,height and weight. 4.It also do resaonable suspension according to the obstacle or the specific road