I got a V3 as a warranty replacement on a V2. It is a little small for Mr 2.5, it does up but I don't trust it as it has come undone at the sides. I think because the elastic is better it fits more tightly than the V2s I've had. So if you are worried about sizing you may have good reason to be worried. Good for the smaller kiddies but not for really big'uns. (DS is nearly 1m tall and 16.5kg so probably beyond the weight/height range for this nappy though).