[sooxiwei]

not a long term option, styro cup is just merely made up of many styro pallets, they heat it and compressed it to be one piece, long term under heat or sun light, you will see the surface start turning powdery, later stage, start to turn vulnerable and easily crash...

if you read somewhere in the net, styro do release some sort of harmful chemical if you place it under heat...

styro is also crunchy, you can easily break it after some times if you are a careless person...

eco friendly...I doubt since it's not something that can break down organically...