The EcoVessel Boulder Water Bottle has been used every day since I received it. Is it just for water? How is it working out? Read the update HERE.
After using the GSI Outdoors Microlite 720 Flip and 500 Twist bottles extensively for a couple months, I was able to assess their strong and weak points well. I will say this, there were not many weak points! Read HERE for the full review and updates.