Water absorption greatly increases the weight of the rope, reduces its strength, and reduces its ability to absorb impact forces. Many nylon ropes are treated with a water-repellent coating to help prevent moisture absorption. Ropes with tightly woven sheaths absorb water slower than ropes with loosely woven sheaths. Abrasion resistance is the rope's ability to resist fraying. Weave patterns, flexibility, and treatments all affect a rope's abrasion resistance.
Every rope kinks.
Help prevent kinking by properly uncoiling the rope from the manufacturer's coil. Place your arms inside the main coil. Spin your arms, allowing the rope to un-wind. Always use a dynamic rope for lead climbing. Static ropes may be used for rappelling, rescuing, caving, top roping, and hauling where there is no chance of significant impact loading.