Choose your rope: dynamic or static?
Dynamic ropes stretch to absorb energy in a climbing fall. Choose a climbing-rated dynamic rope for lead climbing, with the correct single, half or twin rating for your system. Thinner ropes are generally lighter and faster through devices; thicker ropes often offer more grip and wear reserve. Shop dynamic ropes.
Static and semi-static ropes have low stretch for efficient ascending, hauling and controlled descents in an appropriate system. They are not substitutes for dynamic ropes when lead climbing. Handling varies with construction, sheath and condition. Accessory cord is not a substitute for a climbing rope. Shop static ropes & cord.
Diameter guide: start with your use
- Everyday single-rope climbing: around 9.5–10.2 mm is a common starting range for balancing weight, grip and durability.
- Weight-focused single-rope climbing: around 8.9–9.4 mm can reduce weight but demands suitable devices and confident handling. Check that the rope is single-rated; diameter alone does not establish its rating.
- Low-stretch work: around 10–11 mm is common for many ascending, hauling and rope-access systems, but the required diameter depends on the task and equipment.
These ranges are examples, not universal sizing rules. Follow the rope and device manufacturers’ instructions, check certification and diameter compatibility, and choose a length suited to the route and descent. Use appropriate training and inspect your equipment before use.
