A harvester head may include a roller having a groove and supporting a draperbelt.The draper belt may include a web and an elastomeric belt guide projectingfrom web,wherein the belt guide has outer side surfaces extending at an angle of nogreater than100° relative to the second surface when the belt guide wrapping aboutthe roller withinthe groove. The groove may have outer side surfaces, each outer side surfaceextending at angle of no greater than hundred degrees relative to an outersurface ofthe roller.