The TRU Zip zipper is the real win here—no more fumbling with a fold-top while wearing gloves, it just seals shut with one pull. Two liters gets me through a solid three-hour ride without a refill stop.
The TRU zip slider works fine and I haven't had a leak yet, but the fill port is stiff enough that refilling at a tap takes some fiddling. It does the job, though I expected the zipper to glide more smoothly for the price.