Specialist Travel Case for travelling with Frozen Eye drops developed by the Cool Ice Box Company Ltd. Protected Range of Temperature -20 to -16oC Cold Life 8 - 10 hours. What our first client said about this product: Hello there, I wanted to send you something written that can be used for a testimonial on your website if you wish We want to send our heartfelt thanks to you for getting the Frozen Eye Serum cooler to us in time for our holiday - our first in four years due to having no way of transporting the eye drops! The cooler worked perfectly, keeping the eye drops frozen for the duration of our travel until we could transfer the eye drops to the freezer at our hotel. The new cooler is a game changer for us and opens up a whole world of possibilities! Thank you so much! Rachael and Phil Clelland