Well, Keith, as a matter of fact, I don't think there IS a lighter pack aroundat least not one that can carry 1,000 cubic inches of gear, has straps, etc. Ten ounces is pretty darned light when you think about it, and that's what REI's Flash UL Pack ($25so it doesn't cost much, either) weighs. Even GoLite (www.golite.com), a company that hangs its hat on light gear, can't manage to come out with a daypack that weighs less than 14 ounces.
REIs Flash Pack
I honestly think your best bet is to MAKE one. After all, even the Flash UL isn't much more than a light stuff sack with a couple of skinny straps. You can get a stuff sack that weighs literally 1.8 ouncesthe Sea to Summit Ultra-Silk Dry Sack (www.seatosummitusa.com) in the 20-liter size ($23). Then, find some lightweight strap material and sew on the straps. You might even buy a second dry sack, cut it into strips, then fold those on themselves and sew them up into straps, then attach to pack. If you can't make one that weighs six ounces, you aren't trying hard enough.
Please, please, Keithsend me your packing list for a four-day trip. I'll post it on the site.
Prefer the store-bought version? Outside Online's inventory of backpacks will help you find the right bag to carry the beasts you must burden.
Support Outside Online
Our mission to inspire readers to get outside has never been more critical. In recent years, Outside Online has reported on groundbreaking research linking time in nature to improved mental and physical health, and we’ve kept you informed about the unprecedented threats to America’s public lands. Our rigorous coverage helps spark important debates about wellness and travel and adventure, and it provides readers an accessible gateway to new outdoor passions. Time outside is essential—and we can help you make the most of it. Making a financial contribution to Outside Online only takes a few minutes and will ensure we can continue supplying the trailblazing, informative journalism that readers like you depend on. We hope you’ll support us. Thank you.