[JShirley]

http://lh4.ggpht.com/_bz6Ar42bado/TTiO8ZA-IVI/AAAAAAAAA6c/uVMgE4i_zGg/s640/11%2011%3A38%3A52%20AM.jpg

http://lh6.ggpht.com/_bz6Ar42bado/TTiPDCjpmGI/AAAAAAAAA6g/ARVoRXfR5oU/s640/11%2011%3A39%3A19%20AM.jpg

http://lh3.ggpht.com/_bz6Ar42bado/TTiPKjCcqVI/AAAAAAAAA6k/AAjNnAVkMhk/s640/11%2011%3A39%3A46%20AM.jpg

http://lh5.ggpht.com/_bz6Ar42bado/TTiPa-qZZfI/AAAAAAAAA60/fIh2DVYcyzk/s640/11%2011%3A40%3A58%20AM.jpg

Maxpedition makes the RollyPoly and RollyPoly Extreme packs. These fold down into very compact pouches, or expand out into day pack sizes.
http://lh3.ggpht.com/_bz6Ar42bado/TTiPPpFMrpI/AAAAAAAAA6o/vJfwaFN8ZI8/s640/11%2011%3A40%3A15%20AM.jpg

http://lh3.ggpht.com/_bz6Ar42bado/TTiPVYN5fUI/AAAAAAAAA9I/SevY17Ura-Q/s640/11%2011%3A40%3A36%20AM.jpg

[hobodemon]

I have a Maxpedition Osprey II and their Mega-rollypolly dump-pouch, but haven't had a chance to try out their RollyPolly backpacks. I read that they use a lighter nylon-weave, did they seem like they'd hold up?