The St'Anneau Sling by Petzl is a slightly beefier version of their mega-thin Fin'Anneau sling but offers little advantage over the Fin'Anneau. The slings are slightly more durable than the Petzl FinAnneau Sling, but are also bulkier and knots were almost as difficult to untie. Despite their apparent durability advantage, we found them to be less durable than other slings on the market such as the Black Diamond Dynex Runner. If you'd like to bulk down from your nylon slings but aren't ready for the ultra skinny slings, try Trango's Ultratape.
Petzl St'Anneau Sling Review
Cons: Expensive, Difficult to Untie
Our Analysis and Test Results
Petzl's St'Anneau Sling is a lightweight alternative to traditional all-nylon slings. At 12mm wide you are looking at a sling that rests comfortably in the middle range on the "skinniness scale" for sewn slings: slimmer than a nylon sling, but a little fatter than the skinniest of slings. While the wider profile adds a little bulk, it also contributes to smoother handling.
In our tests, we found that these climbing slings are more durable than their skinnier counterparts the Petzl Fin'Anneau. High durability will ensure a longer lifespan of the sling, ultimately saving you some bucks as you won't have to replace them as often. These slings proved to be lightweight, compact, and flexible.
As with all skinny slings, weighted knots in the St'Anneau are difficult to untie. We found these slings among the most difficult to work a weighted knot loose, so they aren't really appropriate for setting anchors or any other application where a weighted knot might come into play.
Though these slings are more durable than the Petzl Fin'Anneau, we found them to be less durable than other Dyneema slings on the market.
These slings are best used in lightweight scenarios where you'll primarily be extending gear placements or slinging knobs and chocks. Not recommended to be used in a situation where you might weight a knot in them…unless you have a pair of pliers with you.
— Robert Beno