a little disclaimer – if your little one is anything like mine and seriously shoves everything into his mouth then please be careful with the little pieces in the lettering. I have removed them all so he does not put them in his mouth. If you rather buy one without these little pieces (but I cannot vouch for what it is like) then you can get this Foam Alphabet Mat (US link) instead
Full Disclosure: by clicking on these links my mummy may earn a little commission but it does not affect you in any way. Me and my mummy recommend stores and brands that we both love, know about and/or have purchased from before!!