What Our Gearhead(R) Experts Are Saying:"This rope feels great to climb with and handles smoothly. Knowing it's partially made from renewable materials makes me feel even better about using it. It's a solid choice for anyone who wants a sustainable option without compromising performance."The Edelrid Birdlime 1R Rope is a game-changer for climbers seeking high performance with a lower environmental impact. As the first synthetic climbing rope with over 40% of its material derived from renewable sources, the Birdlime 1R leads the way in sustainable climbing gear. Made with bio-based polyamide derived from castor plant oil, this rope significantly reduces reliance on fossil fuels without sacrificing strength or handling. Certified as a single rope, the Birdlime 1R is designed for all-around climbing performance, offering a smooth handling experience thanks to Edelrid's Thermo Shield treatment. Pre-coiled using 3D lap technology, it's ready to use right out of the package with minimal tangles. Lightweight and versatile at 9. 8mm, it's ideal for climbers who demand both innovation and reliability.