Who can recommend a great cooler lunch box that isn't too big and works well without wetting everything else in the bag? I know lots of cooler bags that make everything damp and I want to put it in ds's little back pack with spare clothes, toys etc so it has to work properly! I'm looking at Fridge-to-go and the size is great, only 18.5W x 8D x 19.5H (cm) (internal measurement) which is reasonable size without taking up all the room in his bag. It's a bit pricey but I'm happy to pay for something that is going to keep his bag dry, his food cool and is good quality and small in size. TIA