The Pilus skin features a signature thin membrane protecting the glue and making it more waterproof. Strong and durable, very practical and unaffected by temperature variations, the Pilus is the ideal partner to climb serenely towards bliss. The ultra light membrane is very resistant and 100% waterproof. Its hybrid composition (mohair / nylon) makes for an excellent ratio of grip and glide. Its water repellent material is fluorine free, reducing chemical components without altering performance.