By far the most robust doormat you will ever own! Handmade from 100% derelict climbing rope donated by local rock climbing gyms. Once climbing rope has reached it's life span due to safety regulations, the rope is discarded or donated. Climbing rope is "dynamic", which means it stretches a little but is also durable enough to withstand the elements and constant abrasion from rubbing against rough terrain.
Lobster rope mats are great but are typically made from new material...my doormats are handmade by me using only recycled climbing rope, using a fixture that I designed and built, and will outlast any lobster rope mat.