Vecto Water Bladders - 42mm Wide Mouth

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BeFree filter compatible only, NOT compatible with Sawyer filters


  • 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 wide mouth 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.


Filter Compatibility

Manufacturer Model 28 mm Narrow Mouth 42 mm Wide Mouth
   Sawyer Squeeze  
   Sawyer Micro Squeeze  
   Sawyer Mini  
   Katadyn BeFree  
   Platypus QuickDraw  
   HydroBlu Versa Flow  


Vecto 42 mm Wide Mouth 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 narrow mouth 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.

42mm-2l-blue-4.jpg   2l-befree-pot-fill.jpg   vecto-versa-flow-gravity-feed-filter.jpg

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: Polypropylene (PP)

     Slider: ABS

     Slider Tether: TPU

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)

3 Reviews Hide Reviews Show Reviews

  • 5
    Switched from hydrapak

    Posted by Unknown on 1st Sep 2023

    I switched to this bag for using with a BeFree filter after using Hydrapak bags for a while due to some unreliability with those. The seal around the opening looks very solid, and the wide opening bottom makes it much easier to dry

  • 4
    Nice back-up/added capacity for the Be Free water filter

    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.

  • 5
    Works great with Katydin BeFree filter!

    Posted by Juan Umana on 25th Nov 2019

    Five stars.