Riser bars are a type of bicycle handlebar designed to provide a more upright riding position. They feature a slight upward bend, which raises the grips higher than the center of the bar. This design helps improve comfort and control, especially for mountain biking and casual riding. Typically made from materials like aluminum or carbon fiber, riser bars come in various widths and rise heights to suit different rider preferences. They are compatible with most bike types, including mountain bikes and hybrid bikes, making them a popular choice for cyclists seeking a more relaxed posture while riding.