I have the original Simba Hybrid® Mattress cover and I see it's changed. Does that mean mine isn't as good?

The previous mattress cover still has all the great features you'd expect from a Simba engineered sleep surface - it's super soft and breathable. The only difference is that if you want to clean it you'll need to sponge clean with a damp cloth, using circular motions, rather than machine washing. Either way, we'd still advise using our mattress protector to keep it fresh.