Boulder is a cool outdoorsy yet techy town. Somehow it seemed appropriate to name this design after that town.
Works with 1st generation Hydro Flasks, Simple Modern, Takeya, Thermoflask, Nalgene and many other brands of wide mouth water bottles.
Easily interchangeable with other chill water bottle handle designs to fit your mood, outfit, or activity.
Voted #1 new hydro flask accessories by a small group of random people.
Does NOT work with newer version of HydroFlask.
Plays well with Hydro Flask stickers.
Works great with hydro flask straw lids.
Be sure to follow the installation instruction and put the ring below the bottom rung so the lid can seal properly. Use a blow dryer to heat up the ring if it's being difficult to push under the bottom rung.