The tether on this cap is the real hero—it clips right onto the chug spout so the cap just hangs there while I drink. Screws on tight and hasn't loosened after a few weeks of daily refills.
Olivia R.★★★★★
I lose caps constantly, so having one that stays screwed onto the chug spout instead of dropping into the dirt is a small relief. The screw cap feels sturdy and the tether hasn't stretched or frayed after a few months of hikes.
Stella★★★★★
The tether is the whole reason I bought this — I've lost two caps off my bottle on hikes and this one hasn't come loose once. The screw cap feels solid and it fits the chug spout exactly like the original.