The Cilo Gear 20L Worksack offer climbers and hikers a lightweight, versatile, and very durable summit pack. The pack is available in three different styles: the normal 20L Worksack ($65, 11. oz.), the 20L Hauly ($85, 13 oz., and very durable), and the 20L Non-Woven Dyneema ($150, 9 oz., and very durable). Each pack is designed for, and excels at, everything climbing related.
What's the difference between the 20L Worksack series and the Black Diamond Bullet? Answer: the Bullet, with its zippered main compartment and exterior zippered pocket, is easier and faster to get things out of. (With the Worksack you have to unbuckle the lid and loosen the main compartment.) Therefore, we recommend the Bullet for people who want a multi-sport pack and the Worksack for climbers.
The REI Flash 18 is nearly as light as the 20L NWD, but is much worse for climbing, and will be less durable than any Worksack. If climbing is not your main concern, however, the Flash 18 may be for you; it's inexpensive.
If you are considering this pack, then you probably are looking specifically for a streamlined, minimalist pack. The Petzl Bug, with its multitude of features and burly design, is the antithesis of minimalist, but is a great pack in its own rite. Consider the Bug if you are looking for a pack with all the bells and whistles and don't mind carrying something a bit heavier.
Cilo Gear is a small company based in Portland, Oregon. Their products are only sold online cilogear.com. If you can't find what you are looking for there you may want to check out a pack which is sold from a variety of major retailers such as the Black Diamond Bullet.