glass bottle that fits in my cars cup holder!! As a busy Mom I'm always grabbing a smoothie or green drink for the road. It's great for when I finish a day of back to back sessions then grab my keys and turn into "Uber Mom". . . I spent years frustrated trying to fit my eco friendly bottles into clunky cup holders. I've seriously asked automotive engineers to make a larger cup holder throughout the years😉. I L💜VE these elegant, swirly Mason jars for my smoothies and green drinks!! . . I always recommend Mason Jars (paired with stainless steel Eco-Jarz lids and straws) to help people inexpensively transition from toxic laden plastics to glass. You can find these at local Hardware stores (love our local ACE Hardware around the corner😄), Target, Meijers etc. Lids and straws available online. .