Lazy jacks or stack pack?

[geem]

If well designed and made it doesn't need to flap; mine didn't and it was all my own work.

My wife made our new ones based off the old professionally made ones with a few modifications. They look very professional and work very well. We wouldn't be without them. Sailing in the Tropics they are very useful as you can keep sails out of the sun so easily. Just drop into bag and zip it up.