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  • 2 L - Vecto 42 mm
  • Wide scoop opening + Tethered slider
  • Shallow, low-flow champion
  • Tethered cap
  • BeFree compatible
  • 3 L - Vecto 42 mm
  • Side View - Vecto 42 mm
  • Packaging - Vecto 42 mm

Vecto Water Bladders - 42mm

    • Dual openings – wide scoop + screw-on cap
    • Easy to fill from a shallow, low-flow stream
    • BeFree filter compatible
    • Simple to clean, quick to dry
    • Tethered cap and slide can’t be lost


    Vecto is a collapsible water bladder with a unique dual opening for quick, easy filling. One end has a wide opening with a slider seal while the other end, a 42 mm screw-on cap. The wide opening makes it easy to scoop water, even from a shallow, low-flow stream. No need for a separate scoop to fill this bladder. The cap and slide are tethered to the bladder so they can’t be lost.

    The bladder is made of soft-yet-tough TPU that stands up to 220 lb (100 kg) of force. It’s much easier to squeeze than most standard bladders. TPU is FDA approved and BPA free.

    Vecto 42 mm is compatible only with the popular BeFree water filter by Katadyn (not compatible with Sawyer filters). Just scoop water, seal with the slider, screw on the filter, squeeze the bladder, and voila – clean water. Simple. Or set up a gravity filter using two Vectos, a 42 mm for dirty water and a 28 mm for clean. Screw a Coupling to the BeFree to attach the 28 mm bladder. Use two different color Vectos to help identify the dirty bladder. Hang from the hole in the slider or tie a cord through the hole for a larger loop.


    The wide opening makes Vecto very easy to clean. No special brushes or tablets needed. Get your whole hand in there with a soapy sponge and hot water to thoroughly clean the inside. Standard bladders can take a week to dry. Vecto dries quickly with the large opening.





       Bladder: TPU, FDA approved, BPA, BPS, and BPF free

       Cap & Slider: Polypropylene (PP)

    Opening, Cap-Side: 1.37 in. (34.8 mm) diameter

    Operating Temperature: 20 to 120°F (-6 to 49°C)

       Volume 2 L (68 oz) 3 L (101 oz)
       Weight 3.1 oz (87 g) 3.4 oz (96 g)
       Size, Filled/On Side (LxWxT) 13.5 x 7 x 3 in. (34 x 17.5 x 7.6 cm) 17 x 7 x 3 in. (43 x 17.5 x 7.6 cm)
       Size, Empty/Rolled (LxWxT) 7 x 2 x 1.8 in. (17.5 x 5 x 4.3 cm) 7 x 2 x 2 in. (17.5 x 5 x 5 cm)

    Write your own product review

    1. Nice back-up/added capacity for the Be Free water filter  star rating

      Posted by Andrew on 31st May 2021

      Same quality I have come to appreciate in the standard thread-size CNOC bladders, but it fits the otherwise proprietary Be Free filter giving me a backup to that system's bladder and added capacity for dry camps and longer water carries. I do notice a tendency for the Be Free to cross-thread unless some care is applied as you begin to thread it on.

    2. Works great with Katydin BeFree filter!  star rating

      Posted by Juan Umana on 25th Nov 2019

      Five stars.

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