Review on MT Products Food Service Equipment & Supplies: Visible Plastic Bottles by Tres Carmon

When I bought these I had no idea they had the TAMPER stamp. When you unscrew the cap for the first time, the TAMPER ring will be blocked. When you first open it, the TAMPER ring will break, indicating it has been opened. The lid still closes properly, but the TAMPER seal is no longer valid. For me personally they are the perfect size. I've been drinking from the same bottle all day (backwashing sucks) so these little milk bottles are great. Now I can drink water, energy drinks, iced coffee/tea and other beverages outside of the house during the day.