I am happily using Tesco nappies which are always soft but have had some aldi ones and another brand I can't remember that have been on top of the cupboard for 6 months. I threw a handful of an old batch out as some of the gel/crystals or whatever it is inside had gone hard and created little 'stones' which I can't imagine would be very comfortable to lie your bum on! I just opened a jumbo aldi pack and the same thing has happened. Are they old and going 'off' or is this normal? I don't really want to use them on my baby as I imagine it wouldn't be very nice for him. The packs are no more than 5-6 months old.