Our second-in-line premium series ZETA, that accommodates single walled bottles for faster cooling and refrigeration along with our Patented 0SPILL Technology. 0SPILL is an exclusive brand that works with innovative and futuristic designs with no spilling problems. The product accommodates an auto lid-locking feature, that pours water out whenever the pressure is applied either by hand or by lips while drinking. The lid automatically closes as soon as the pressure is released.