With about 40L of space in a simple and durable package, the 30:30 WorkSack from CiloGear is an extremely versatile, go-to alpine pack. Bigger than a 30L alpine pack, but smaller and lighter than cumbersome 45-50L multi-daypacks, the 30:30 is excellent for 1-7 day summer trips (depending on how light you go), multi-day winter alpine routes, or ice climbing days where you may need more space than normal. None of the other packs of this size is versatile, durable, or well featured, as the 30:30 WorkSack, and most are significantly heavier as well. This is arguably the most versatile alpine pack available. It's the best choice if you want one pack to do just about everything.
However, we find that the 30:30's extra space compared to the CiloGear 30L is unnecessary for day trips or fast and light multi-day summer trips. The extra length that comes with that extra space also makes the 30:30 less comfortable for climbing (a common problem with all "larger" packs). Nonetheless, the 30:30 is our testers' second most used alpine pack and our go-to option for fast and light winter climbs.