The SegSac has internal dividers to keep clothes and gear from floating around in your pack or luggage. http://gearjunkie.com/segsac-stuff-sack
See also: http://gobigear.com/products/the-hoboroll-pinyon-pine
Segmented: Stuff Sack Organizes Your Gear
The Ultralight Hiker
Ultralight hiking, backpacking, bushwalking, deer hunting, canoeing, pack rafting, tips, trails, adventures, gear, reviews...Over 1600 posts & 70 years' experience.