As any good rigor knows an upline break can be a catastrophe! Well I love the feeling of jute for body lines, when it comes to uplines I trust hemphex. It has three to four times the breaking strength of jute, but retains the look of jute, so your ties look great! This is the only room I use for up lines for any suspension tie!
I have a tendency to be very picky, I've been in the BDSM community for 40 years, and have always been a careful rigger, I'm also an engineer so I pay attention to details in the materials that I use! Those are the reasons that I recommend this product!