Foam Insulated Core (FIC)
We build lots of prototype and tested each of them in both hot and cold water. We found thermo depreciate quickly at the bottle neck area. We tested with our FIC bottle cap, and our bottle gained extra 2 hours thermo protection in hot water and 5 hours in cold water.
Steel shield bottom
We’ve implemented a food-grade stainless steel protection at the bottom of every bq bottle cap. It protects your drink inside a 360 stainless steel environment.
Silicon soft grip
We want zero detent and smooth to touch design bottle cap. However, we also want to make sure people can grip tight while opening our bottle. The solution is adding a matching color silicon soft grip at the peak of the curve.
Double silicone gasket
Short answer: Double the seal.
Long answer: We kept one gasket closest to the Steel Shield and another gasket at the lips of the bottle. We gain longer gasket life cycle and better thermo seal.