Large Lightweight

I’m making a large object for cosplay, anyone know of a lightweight transparent plastic I can mold at home?
I would like something I can do at home, but any information would be appreciated. If it comes in a light blue effect that would be even better! If anyone has any other ideas I would love to hear of them! Thankyou ShadowDragonPhoenix
i think your looking for wonderflex. you can buy it online. you just need a heat gun to mold it. you just heat it up, and press it around the body part you need (ofcourse with a towel under, or some clothes under). this will make it fit perfectly, and you can line it with cloth or craft foam for extra comefort (just hotglue it on) i think they sell it at cosplay.com
have fun
Multiplex FunCub – Ultimate All Purpose RC Plane