Big Zip™ EVO Reservoir

$32.97 ~~$49.95~~ In stock

Stay hydrated on the trail with the Platypus Big Zip EVO Reservoir, a premium, taste-free hydration solution designed for outdoor comfort. This award-winning reservoir delivers a 50% faster flow rate, ensuring you get the water you need without delay.

Premium, taste-free construction for clean, refreshing water
50% faster flow rate for efficient hydration
Available in multiple sizes: 1.5L, 2L, 2L Lumbar, and 3L
Part of the Platypus lineup, trusted for outdoor comfort

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Evelyn Y. ★★★★★ Sep 10, 2026

The faster flow rate is no joke, I drained half of it on a steep climb without feeling like I was fighting the bite valve. Took it on a 12-mile hike and there was zero plastic aftertaste, which was my main gripe with my old reservoir.

Brian P. ★★★★★ Sep 9, 2026

The wide opening makes filling it at a campsite sink so much easier than my old bladder, and I love that there's zero plasticky aftertaste even on a hot day. Water flows fast enough that I don't have to suck hard to get a drink mid-hike, which honestly sold me on it.

Owen D. ★★★★★ Sep 8, 2026

The flow rate really is noticeably quicker than my old bladder—no more sucking hard mid-climb just to get a sip. It’s been on three rocky hikes so far and not a single hint of plastic taste, which honestly surprised me.