An arrangement of a bicycle handlebar grip and a handlebar, wherein the bicycle handlebar grip is fastened on the handlebar, and wherein the bicycle handlebar grip comprises: an inner sleeve that is made of a non-deformable material, wherein the inner sleeve has a fastening region that is fastened on the handlebar, and wherein the fastening region is a clamping region, and an outer cover that is arranged on an outer side of the inner sleeve and made of a deformable plastic, characterized in that a flattening is formed on an upper side of the inner sleeve in order to enlarge a contact surface for a hand of a bicyclist resting on the bicycle handlebar grip, wherein a first elevation (5, 5-1) and a second elevation (5, 5-2) are formed on the upper side of the inner sleeve, wherein the first and the second elevation (5, 5-1, 5-2) are arranged on opposite sides of the flattening and enlarge and/or delimit the flattening, and wherein the two elevations (5, 5-1, 5-2) include an angular range between 80° and 120° referred to a longitudinal axis of the inner sleeve, wherein the inner sleeve has the clamping region, by means of which the inner sleeve is fastened on the handlebar, wherein the clamping region has a fastening gap that allows advantageous positioning of the clamping region on the handlebar, wherein the diameter of the clamping region is reduced in order to effectively clamp the inner sleeve on the handlebar for the installation of the clamping region by means of a clamping element, wherein the handlebar, as well as the inner sleeve, is made of a non-deformable material in order to ensure effective clamping of the inner sleeve of the bicycle handlebar grip on the handlebar, wherein the upper side of the inner sleeve corresponds to the side of the inner sleeve, which is oriented upward in the intended installation position of the bicycle handlebar grip, such that the hand surface of the bicyclist can rest on the upper side of the inner sleeve in the intended installation position of the bicycle handlebar grip, and wherein the upper side of the inner sleeve is oriented toward the bicyclist in the intended installation position of the bicycle handlebar grip. an inner sleeve that is made of a non-deformable material, wherein the inner sleeve has a fastening region that is fastened on the handlebar, and wherein the fastening region is a clamping region, and an outer cover that is arranged on an outer side of the inner sleeve and made of a deformable plastic, characterized in that a flattening is formed on an upper side of the inner sleeve in order to enlarge a contact surface for a hand of a bicyclist resting on the bicycle handlebar grip, wherein a first elevation (5, 5-1) and a second elevation (5, 5-2) are formed on the upper side of the inner sleeve, wherein the first and the second elevation (5, 5-1, 5-2) are arranged on opposite sides of the flattening and enlarge and/or delimit the flattening, and wherein the two elevations (5, 5-1, 5-2) include an angular range between 80° and 120° referred to a longitudinal axis of the inner sleeve, wherein the inner sleeve has the clamping region, by means of which the inner sleeve is fastened on the handlebar, wherein the clamping region has a fastening gap that allows advantageous positioning of the clamping region on the handlebar, wherein the diameter of the clamping region is reduced in order to effectively clamp the inner sleeve on the handlebar for the installation of the clamping region by means of a clamping element, wherein the handlebar, as well as the inner sleeve, is made of a non-deformable material in order to ensure effective clamping of the inner sleeve of the bicycle handlebar grip on the handlebar, wherein the upper side of the inner sleeve corresponds to the side of the inner sleeve, which is oriented upward in the intended installation position of the bicycle handlebar grip, such that the hand surface of the bicyclist can rest on the upper side of the inner sleeve in the intended installation position of the bicycle handlebar grip, and wherein the upper side of the inner sleeve is oriented toward the bicyclist in the intended installation position of the bicycle handlebar grip.