ROC N SOC NITRO RIDER WITH ORIGINAL EXTENDED GREEN SEATThe Roc N Soc Nitro Throne is a lightweight seat with a nitrogen gas shock absorber built in. For a drummer who wants a little bounce, this feature adds to its other benefits. Bracing is very strong. Leg fatigue is reduced by the bicycle's design. Seat height ranges from 18" to 24". Features Space saving design for compact storage Gas shocks gives bounce to the seat for reduced back fatigue Easy to use gas lift for quick height adjustments Free