Bath mat recommendation

[Stewgans]

I need a good non-slip bath mat for my 11 month old who is determined to stand in the bath. Does anyone has any good suggestions on which ones stand the test of an 11 month old?

I just have those non slip stickers in my bath (shaped like various sea creatures, bought from Mothercare a couple of years ago). Both my DCs insist on standing in the bath and neither have ever just fallen over so I guess they must be OK although I wasn't convinced by them when I first put them down.