Big II Gravity Water Filter

(3 customer reviews)


Recommended for 2-4 persons

Dimensions: 9.25″ x 21″

BPA & PVC free plastic

Includes one ProOne® G2.0 5″ filter (upgrade available)

SKU: PO1-BIGII Categories: ,


Whether on the go, emergency preparedness or for daily use, be at ease knowing you have clean drinkable water with the new ProOne® BIG II Gravity water filtration system.


Easy to set up. No electricity or plumbing required. Use with just about any potable water source whether at home, office, school, camping or traveling.


All ProOne® gravity systems feature ProOne® G2.0 “all-in-one” NSF/ANSI-42 component certified filter technology – the smarter filterTM. Independent lab tested to NSF standards 42, 53, P231, microplastics,1,4 Dioxane, Microcystin, emerging contaminants, PFOAS (GenX), TTHM’s, bacteria, Fluoride, Lead, Parasites and more. Visit our lab reports for full details on the 200+ tested contaminants.


The new ProOne® BIG II Gravity system features exclusive design for viewing how much water is in the lower container by just looking at it. The BIG II is made from heavy duty BPA, BPS & BPF Free plastic for long lasting durability and includes a BPA Free plastic spigot. Includes carrying bag.



Click here for lab report

Click here for instructions

Additional information

Filter Options

1 ProOne® G2.0 5" Filter Element, 2 ProOne® G2.0 7" Filter Elements


2.5 Gallons


30-Day Risk-Free Guarantee, 1-year limited warranty


Plastic unit, filter(s), knob kit, spigot kit, plug(s), sponge, instruction booklet


ProOne® G2.0 Series water filter cartridge is Tested and Certified by NSF International against NSF/ANSI Standard 42 for material requirements only.

Currently no frequently asked questions available for this product.
Feel free to contact for any questions you may have!

3 reviews for Big II Gravity Water Filter

  1. delbrie2017 (verified owner)

    I have been using Prooneusa products for many years and we absolutely love them all. We have tried the shower head filter, all the water purification systems and find everything to be quality and more!

  2. lindy.l.l (verified owner)

    I recently bought the blue Big & personal canister one.
    I have previously bought the big stainless, the traveler, &
    Two fancier ones a few years ago. I purchased the blue for a college student,
    because the traveler was unavailable. Most of them were gifts.
    Do love your products & filters. None other as good. Hope they remain available.
    Bought the blue with stand & upgraded to two 7” filters. Runs thru at a good clip. This student is an athlete & drinks a lot of filtered water every day.
    The traveler I bought for his brother went thru four years of college with him & is now in his apt. His college friends tapped his filter for water too.
    All good.

  3. bfarish1800 (verified owner)

    Love this one for travel! I have a larger 304 stainless on the counter at home (and the pitcher) and love them, but this was a wonderful addition to our travel supplies. I used to transport many gallons of bottled water to Florida for my daughter when we went to visit family there. Couldn’t stand the taste of Florida water! Simplified travels, no toting large quantities of bottled water, no packing up my 304 stainless and hoping it didn’t get dented or otherwise ruined. ,

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