My Six Moon Designs Skyscape has the outer fly sewn to the inner mesh wall. Luckily I haven't had to set the tent up in the rain yet but with the vestibules zipped shut I don't know how it would get wet inside when setting it up. Five stakes and your trekking poles (or available tent poles) and the thing is up. Takes like 2 minutes. I've really enjoyed the tent so far and is fairly roomy for a one person tent. I've got the Trekker model which is sil-nylon and with tent body, ground sheet and stakes weighs in at around 32 oz.