Ergon gp1 handlebar gripsproviding the hand comfort you need to take on mixed terrain rides, the gp1 handlebar grips bring you a vibration absorbing material, ergonomic shaping and they are environmentally friendly. For the main grip body, ergon has used cork that's sourced from sustainable forests and its reinforced internal area is made using natural fibres. Available in different variants to suit your bike's gearing setup, their unique shape offers you multiple hand positions on your bars.features grip material biokork 40% cork with ergon super soft rubber pads lockring material cold forged aluminium inner core material reinforced use mountain bike mtb, touring and commuting single or pair pair 100% recyclable carbon bar compatible weight 195g approx. Options explained standard option has large, equal sized grips for both sides of the bars dual gripshift option has shorter grips that offer an ergonomic approach to double twist shift pain relief rohloff nexus option has a shortened grip on the right. This grip is most popular on mountain bikes mtbs, fitness bikes and touring bikestechnologiesbiokork the biokork version of ergon's successful gp series combines ergonomics, sustainability and a comfortable feel consisting of 40% cork material. The material comes from organic farming in portugal and meets strict ecological guidelines. In the inner support, 20% of the plastic is replaced by grass fibresbuy ergon components from chain reaction cycles, the world's largest online bike store.