Firstly I waited a long time to receive my product that comes by plane from Hong Kong, and I received the other PRODUCT BAD! So I end up with a shell "anise" firecracker instead of "blue green" promise! I AM VERY DISAPPOINTED even more than the product that dirty very quickly ... and yet I am a neat freak it is to say! Conclusion: - Not very resistant yes - Hard shell to be compared to the original - Very messy - WRONG PRODUCT SENT !!