The GP5 Biokork offers all the ergonomic advantages of the GP5, but combined with unique BioKork technology. Weighing just 385g per pair, this grip is designed with the environment in mind.Why BioKork? Cork is antibacterial and hypoallergenic, making it a perfect material for grips. It also has natural damping qualities, providing a comfortable grip. Plus, cork is lightweight, making these grips lighter than others on the market.The BioKork grips are made with 40% cork sourced from sustainable forests in Portugal. The cork is certified for its ecologically sound production. Continuing the ecological theme, the inner core of the grip is reinforced with natural fiber, which makes up 40% of its mass. The gel in the palm section of the grip is vegetable oil-based, replacing the use of mineral oil.This sustainable and eco-friendly design is a result of Ergon's ""GreenLab"" initiative. Choose the GP5 Biokork grips for a comfortable and environmentally conscious cycling experience.