Luxilon Element Rough is the textured version of the original Element, a co-polyester string released in 2015. Like the smooth version of Element, this textured version features Multi-Mono Technology, which puts several flexible filaments inside Luxilon’s proprietary polymer matrix. In theory, this technology should give Element Rough a slightly livelier and more comfortable feel. Please note that packaging may differ as your set of strings may be cut from a reel.