I thought that this product (Keytars - Guitar Key Covers) would be much easier to recognize my keys which have the same shape ... Then the original guitar-shaped design and being metalheads so inevitably neither one nor two j ' I am in control only two to three days the matter "silicone" is easily cut from my keyring "" how to spend 10 uros for nothing. '" So I am very disappointed with the product Keytars, having said my girlfriend recommend using nail polish for women (around 5 uros) and it is much more efficient so I also recommend doing the same as me! by making different patterns with nail polish ...