Bought this for my 3 1/2 month old daughter for Christmas as she was starting to show signs of teething and she loves it. She started to grip and hold days before Christmas and never had it out of her mouth.
Unlike the original Sophie (which I did originally look to buy) the rubber is much more solid, although still soft enough for the gums. And the texture around the loop and giraffe is great for massaging them.
Also, unlike the original Sophie, you can clip this to links and attach to your car seat or other when out and about, which saves it from being constantly dropped on the floor when you're on the go.
I liked that this version wasn't too big, or had long legs that she could easily ram down her throat, which likes to do with her fingers sometimes!!!
A great buy for not much more than a five pound note! Would strongly recommend.