CNOC Vecto review: the ultralight collapsible for gravity filtering
Ask a thru-hiker what they carry water in and you will hear the same answer again and again: a CNOC Vecto. It is the ultralight collapsible that scoops from a shallow creek, packs to nothing when empty, and threads straight onto a squeeze filter to become a gravity system — the specialist’s water carrier.
The verdict
The ultralight backcountry water system. The CNOC Vecto is a soft, collapsible container that solves the two hardest parts of backcountry water: collecting it and filtering it. A wide zip-slider opening scoops water from an inch-deep trickle where a bottle cannot, and the 28 mm threaded end screws directly onto a Sawyer Squeeze so you can squeeze or hang it as a hands-free gravity filter. Empty, it rolls to the size of a fist. It is not the bottle you sip from all day, and you must not overtighten the cap, but for filtering and hauling water on a long trail, nothing packs this much capability this small.
What it does
The CNOC Vecto is a collapsible soft water container built for backcountry filtering, sold in 2 L and 3 L sizes. It has two openings, which is the whole trick. One end is a wide slide-seal opening (like a freezer bag’s zip) that lets you scoop water fast from a shallow, slow, or awkward source — the exact situations where a narrow bottle just sits there half-empty — and then makes the inside easy to reach for cleaning and drying. The other end is a standard 28 mm threaded neck that screws directly onto popular squeeze filters such as the Sawyer Squeeze and HydroBlu VersaFlow: fill the bag, thread on your filter, and either squeeze clean water into your bottle or hang the bag from a branch and let gravity filter it hands-free while you set up camp. It is genuinely tough for its weight — rated to a 220-pound breaking point — yet the flexible material rolls up to almost nothing when empty, and the cap and slider are tethered so you cannot drop them in the creek.
What verified buyers say
Verified-purchase owners — a great many of them long-trail and section hikers — are strikingly consistent:
- The filter integration is the point. Owners love threading it onto a Sawyer Squeeze to hang as a gravity system, calling it the reason “everyone uses these” on the trail.
- Scoops shallow water and packs tiny. The wide opening fills fast from streams and lakes, and the flexible material rolls down small and light — far better than stiff plastic bags.
- Easy to clean. Buyers single out being able to get a hand inside the wide opening to wash and dry it — no special brush needed.
- Durable when treated right. Multi-day and PCT users report it holding up trip after trip, and note the current version fixed the older model’s cap and slider leaks.
Worth knowing
One rule owners learn the hard way: do not overtighten the threaded cap. It does not click like a rigid bottle, and cranking it down can crack the fitting — snug is enough. Beyond that, know what it is: this is a collection-and-filtering container, not a sip-from-it-all-day bottle. Many hikers use the Vecto as the “dirty” bag to fill and filter from, then drink out of a lightweight bottle. The soft material can feel awkward to drink from directly and, like any bag, wants emptying and drying between trips so it stays fresh. Buy it as the collecting-and-filtering heart of an ultralight water setup, and pair it with a squeeze filter and a drinking bottle.
Who it is for
The CNOC Vecto is for the thru-hiker, ultralight backpacker, or anyone building a gravity-filter system who needs to collect and treat water efficiently while carrying almost no extra weight. It shines paired with a squeeze filter — see our Sawyer Squeeze review, which it threads directly onto. If you want a simple bottle you can drink from and measure, carry the Nalgene 32 oz; if you want hands-free sipping on the move, look at a reservoir like the Platypus Big Zip. Most ultralighters carry the Vecto for collecting and filtering and a light bottle to drink from — the two together are a complete backcountry water system.
Specs at a glance
Type: collapsible container (2 L / 3 L) · Filter thread: 28 mm (Sawyer, HydroBlu) · Fill: wide zip-slider opening · Strength: ~220 lb breaking point · Packs flat; tethered cap + slider · Best for: ultralight collecting + gravity filtering
The Verdict
The CNOC Vecto is the ultralight water carrier that does the hard jobs — scooping from shallow sources and filtering hands-free — while packing to nothing. Thread it onto a Sawyer Squeeze and it becomes a gravity system; just do not overtighten the cap. Want a simple bottle to drink from and measure? See the Nalgene 32 oz. Want hands-free sipping without stopping? Look at the Platypus Big Zip or HydraPak Force reservoirs.
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