3 PACK OF FREEZER COOL PACK ICE GEL COOLER BOX BAG REUSABLE TRAVEL LUNCH school
Step 2:Squeeze the water inlet shut - it will self-seal. Step 1:Add water up to the water-line on bag through the water inlet on top of bag. Step 5:The cooling effect lasts 10-24 hours. Step 6:Can be re-used and re-frozen repeatedly.