Only Sterling ropes have a unique feature called DryCoreTM. What is DryCore and why is it so important? DryCore is Sterling's innovative and proprietary way of treating the core yarns so as to reduce yarn-on-yarn abrasion and moisture absorption. The core provides the strength and power of your rope. If your rope gets wet, it loses critical strength and elongation will increase. In fact, tests have shown that a wet rope can lose up to 30% of its strength. In tests conducted at Sterling, wet ropes constructed with DryCore had less increase in elongation than standard ropes and maintained their strength characteristics while ropes without DryCore did not.