Best polyester vs nylon sling climbing reddit I'm planning on picking up a Defy Insidious sling and they offer it in waxed canvas and a ballistic nylon. And perfect an anchor setup that minimizes or eliminates knots in slings. With this combo they have a 2-way stretch but due to how the fabric is woven, they are very breathable -to the point that, without long underwear, you will feel the wind up Of course 1 person(the second) is going to need a sling and a binder to clip the master point or the shelf. for a 35L pack I would definitely choose the XPAC version. I can't find an arm sleeve made from those materials that ship to the UK. A nylon sling would be more robust than a dyneema sling, but they are bigger and more unwieldy for such a purpose. Dyneema has a lower melting point than nylon, so the heat caused by the friction of the prusik and the rope rubbing together is more likely to melt/weaken/break a dyneema third hand than a nylon third hand. Polyacryl, polyamide, elastan, polyester, acryl, nylon, the list goes on. I personally think mixed slings offer the best compromise. I also like using cord or nylon slings to build anchors. igsjc phbzg agzaqn eokjv jfr gujzc kdyatn fykga kwvik mno