Waterproof, superking, extra-deep, quiet mattress protector - do these even exist?

[podmumlet]

We have recently bought a new superking mattress as our DS loves climbing into bed with us. I would like to keep the mattress pee and tea stain free, and recently bought a Comfortnights SuperKing Waterproof cover, and it is a dream! It doesn't make a rustling noise when you sit on the mattress and its super soft to the touch.

Sadly, it is just not deep enough which means and pulls up and gathers under the fitted sheet and defeats the purpose of having one.

I recently bought another fitted sheet but really didn't like the crinkling noise it makes and can't imagine sleeping on it!

I am struggling to find a mattress protector that fits my criteria - has anyone found one?

I bought one of these for our superking bed when I was pregnant, was very quiet and seemed pretty deep?

Actually, just realised it has elastic to attach it so doesn't go down the sides, might not be what you want...

Thanks for the speedy reply LadySnapcase

Yes, that is the one that I have currently. It really is a superb mattress cover, but just that little bit not deep enough it seems :(

Worse case scenario, I will stitch the cover onto a fitted sheet and place that sheet under another fitted sheet if I cannot find one deep enough

But that seems a bit desperate.

We've got these
John Lewis
They are deep.

Really? Nope, it is on a fitted netting, but just not deep enough...

Whoops - sorry for all the cross replies.

The John Lewis one is for 32cm depth - off to remeasure my mattress...
I thought I needed 38cm depth, but now I'm not so sure.....

Ohhh... just found this Allergon one

Has anyone used this one?