You might as well keep Camp USA's Express Dyneema Runner in your backpack because you'll end up using it on every alpine climb. You can use it to make long alpine draws to reduce rope drag on wandering climbs, and it makes a superlight and compact anchor for multi-pitching. Even if you don't use it for all that, you can still rack up all your trad gear with it. Camp made it out of light, slim, and surprisingly strong Dyneema.
Superlight runner for alpine draws and climbing anchors
Dyneema is slim, light, and surprisingly strong
Q & A
Familiarity: I've put it through the wringer
I bought some of these for my alpine draws. They're not my favorite slings that I've seen, but they definitely get the job done.