Everyone loves the lightweight Dyneema these days, always going smaller and smaller. Well, this dude digs sturdy construction and runners that fold nicely after break-in. I try not to buy Spectra anymore, and Dyneema just doesn't have the versatility in the smaller mm sizes. Sterling made these very rugged with reinforced stitching; i use em for trad extended draws and for redundancy in aiding or anchors. Don't be afraid of the weight; the versatility makes up for it.