I’ve been testing the leakproof straw seal during my gym bag toss-around, and not a single drop escaped. The 20 oz size fits my bike holder perfectly, too. Only wish the straw were a bit longer for deeper sips.
Julian A.★★★★★
Filled it with ice water before a long afternoon of yard work and the 20 oz size was just right for my backpack. I didn't have to worry about it leaking once I clicked the straw down, which was a huge relief when I tossed it in the car.
Steven★★★★★
Took it on a 10-mile trail run and the 20oz size fit perfectly in my pack’s side pocket. The straw seals tight enough that I didn’t worry about it leaking in my bag, and it’s held up to being tossed around all week.