These individual ready to emergency drink water pouches have a 5 year shelf life. Minimum 2 pouches per person per day recommended. Processed and sealed in airtight pouches, these emergency water rations can withstand temperatures ranging from 32 F to 149 F and offer a dependable potable water supply for up to five years without the need for rotation schedules and additional purification. Can be frozen without any adverse effects, and it can also be used as cold compress. U. S. Coast Guard approved. [embedyt] https://www.youtube.com/watch?v=bSccVihbyvY[/embedyt]