This effect is, without a doubt, one of the cleanest barehand productions ever devised. The hand is held to create a "hole in space". The audience can clearly see through the empty hole. From virtually every angle, you can show both hands. Then, you reach into the hole and slowly produce a rainbow streamer almost 6' long!
This effect is very easy to master and comes complete with everything you need to perform, including Cloaking Device, streamer and easy to understand instructions.