Certifications and specifications are important, but what makes MAXIM a premier climbing rope is durability and excellent hand. We take extra care to ensure that all New England Rope is easy to knot, easy to clip, and durable. MAXIM dynamic ropes are manufactured with 48 sheath yarns, stabilized yarns, and high twist levels. This ensures maximum abrasion resistance, minimum shrinkage, and a round, tight sheath. Our specs are what you would expect from America's Premier Climbing Ropes.