sentences:  Some manufacturers have relegated the term anatomic to this curvature shape, while adopting the term ergo to instead describe non-cylindrical tubing cross-sections on the upper flat portion of the bar, intended to be more comfortable when riding in the upright position.Drop bars that rise slightly from the center in a shallow U, and the drop portion of the bars is set wider than the curve at the top.Designed to be slightly more comfortable than a straight drop bar for bicycles used in Audax riding.