I didn't buy these from Amazon, but I have been using them on my daughter since she was one and still use them on her now that she's 2. She is by no means a small child - tall for her age, no porker but sturdy enough.
I have found these rains to be durable, secure, the handle is an excellent feature that I still use when necessary, and it seems to cause her no harm when I do lift her up a step by it etc.
She has worn it over coats without a problem in the dead of winter. We did have one issue when she was dressed for snow, in multiple jumpers and coats, and so we just put the rains on underneath several of her layers and brought the long reins out the back of her clothing to keep her from slipping over. I found that to be a good solution and it didn't seem to bother my daughter either.
It's not just me either - my parents look after her several afternoons a week and they have found these reins essential. My husband uses them, my inlaws use them - not only without complaint but with enthusiasm.
So either Tommee Tippee updated these reins since the other reviews were written (?) or perhaps we have just been lucky, but if I lost these, I would buy another pair of the exact same make.