The RTIC backpack cooler will give you 2 options- a 20 can backpack or a 30 can backpack. Both have plenty of room to store what you need to keep cold for up to 24 hours.

RTIC backpack coolers are built with premium insulation on the inside and heavy duty, leak proof material on the outside. With comfortable straps that'll make you go handsfree, very compact and floats when on water!