Thanks Lea

i ran mine through the dryer and they've come out fine after prewashing

i would think you could possibly dry the outer on the clothes airer and run the boosters through the dryer if they're snap in's rather than sewn in's - i've done this to make sure the outers don't go through the dryer too often...
Thanks BG, they are sewn-ins, I don't want to put them through the dryer too often, but we are also moving this week so we will have heaps more room to hand then up inside and get them to dry etc.

Yay I am sooo excited