As it says, 5kg of pond fish food for £4. Says its 1 - 2 months wait, I ordered on 27 June and did have a date of the start of September, bu just received an email to say it will be with me next week instead. Assuming they are the same as the ones in tubs, they consist of:

28% crude protein
3% oil
2% fibre
7.5% ash
10% moisture (seems high?)

At less than a quid a kg seems a great way to bulk up your koi.