Stamina 15-0125 InStride Folding Cycle Portable folding exercise bike that sits on a tabletop or on the floor Battery-operated electronic monitor times your workout; Consists of tension knob adjusts resistance; Material: Steel frame Convenient tension control offers several resistance levels Sturdy nonslip rubber feet; sturdy foot straps for stability Measures 19 x 15.25 x 12.25 inches (W x H x D); 90-day warranty Burning calories Boosting strength Improving hearth health Maintaining proper mobility while aging