Cheeki's Insulated Water Bottles Cheeki's superior vacuum insulation that keeps water icy cold for 24 hours and seriously hot for 12 hours. Not only does it keep the liquid inside at an optimal temperature but with no temperature transfer it ensures that the outside of the bottle is 100% sweat-proof. So, no need to worry about pools of condensation, even on the balmiest of night. Sip at home or hydrate on a outdoor trek, whatever it is you're into, choose Cheeki for every sip.