Freeze Reusable Cold Ice Gel Pack Picnic Food Storage Cooler Bag (200ml)
Capacity: 200ml, 400ml, 600ml(Optional). 200ml: 15 x 10cm / 5.9 x 3.93". 4, Put this product in fridge for 4 to 5 hours till it freeze into a lump then take it out to use. Water inlet is designed with self-sealing structure so gel will not out.