Samson's Dynasorb II is a line with a special core made of a high-strength nylon blend built to come back to shape again and again for an unbelievable rigging performance. This core is slightly more elastic than a regular rigging line - still static enough to work perfectly, but with enough stretch that climbers and groundsmen will recognize and appreciate it. The jacket of Dynasorb II is 100% high-tenacity polyester and is Maxijacket-coated for excellent abrasion resistance, especially in wet environments.