After the successful launch of the GD1 Factory in 2017 and multiple podiums, Ergon have launched the updated GD1 Evo using GravityControl Rubber.Thumb Zone Ultra soft damping texture for the thumb areaFingertip Zone Maximum grip for the fingertipsLower Palm Zone (Top) Precise damping properties in the lower palm zone2 grip diameters: Standard for glove size Large/X-Large (8.5-10.5) & Slim for glove sizes Small/Medium (6.5-8.5)Carbon friendly CNC Aluminium clampsInterchangeable end plugs140g per pair (Standard)125g per pair (Slim)Sizing Information:In order to help you maintain perfect control over your bike, your hands should not completely envelop the grip, which is why Ergon offers many grips in two size diameters Small and Large.The difference refers to the grip width (hand size), meaning a larger hand will have a more positive fit on a thicker grip, while a smaller hand is better fit to a smaller grip. For hand/glove sizes 6.5 to 8.5" we recommend Small, for 8.5 to 10.5" Large usually is better. To measure your hand/glove size you need to measure around the largest part of the hand over the knuckle while making a fist, excluding the thumb.