Internet Gift Store is selling a rather unusual variety of the Elsa and Anna lunchbag bottle duos. It's £9.99 with free UK delivery, but if you use the code FACEBOOK1 and ICLICKED it takes £1.50 off the total, bringing it down to £8.49, delivered. This set is currently available at Amazon* for £10 with £3.99 delivery, so you're saving a few pennies at IGS with this offer.
I do like this case over a soft case! It should prevent sandwiches getting squashed and fruit getting bruised, which would definitely please my daughter! I've not seen these before either.
This is apparently official Disney merchandise, and is obviously food safe. The casing is wipeable, and the carry handle offers secure closure. It's also BPA and lead free.
The set includes a matching bottle, although it seems to only be matching in colour, as there's no image on it.
Remember that with IGS the price goes up as an item becomes popular so don't delay if you want this set at this price, and if you're having trouble with free delivery on PayPal, try to pay by card and it should take care of that for you.