Nestle Pic A Pac 8's 260g, 8 pack variety pack of cereal but on the back of each mini pack there is a 25p off next purchase voucher and for anyone in Ireland there is also a 50c off next purchase voucher. Therefore 8 vouchers per multipack.
Unfortunately it doesn't mention the voucher anywhere visible until you open the multipack so I can't guarantee it everywhere but I will say its on the 4 multipacks I checked.
I believe you can use 1 voucher per shopping trip at tesco even if you don't buy the stuff the voucher states.
Therefore for £1.19 you get £2 worth of vouchers (and 4 euros worth) and 8 packs of cereal.