About pooboo Magnetic Resistance Exercise Bike:Enjoy 30 minutes cardio workout with this Upgraded Version D525 Indoor Cycling Bike every day . you will become stronger . faster . and better. Whats more . you need not worry yout boday shape . because the newest D525 added the stretching function which could strethcing muscle and shape your body. The widened and thickened frame increases the stability of the bike and supports up to 330 LBS. The 35 lbs flywheel provides powerful and smooth riding. The adjustable resistance . seat .handler bar . a