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VSITOO S2: Opening the Filter Cartridge Built into the Bottle Cap
A look at the removable filter assembly and drinking spout.
Article published November 3, 2026.
The part I want to open on the VSITOO S2 is the cap. The bottle has a clean black finish, but the filter assembly tucked into the top is what makes this design different from an ordinary insulated bottle.
I unlock that assembly, take a look at the replaceable cartridge and put it back together. This is a hardware walkthrough, rather than a water-quality test.
The filter lives in the lid
I show how the cap unlocks and where the cartridge sits. After putting it back, I try the opening mechanism and the drinking nozzle.
The appeal is having the filter and drinking arrangement integrated into a bottle I can carry. In the recording, I identify this one as the 25.4-ounce size; the seller also described other sizes.
Opening a filter is not testing its performance
I discuss filtration and insulation claims in the video, but I do not analyze water samples, verify a certification or time temperature retention. The unboxing does not establish which contaminants a specific cartridge removes, how long it lasts in particular water or whether a water source is safe to drink.
Those questions need the current manufacturer's documentation for the exact cartridge and its intended use. What I demonstrate here is the physical cartridge access, cap lock and drinking spout.
The code from the original description
The description lists NIAFC7061 as a discount code. It gives no amount or expiration, so neither is added here. The original purchase link and code are below for checking the seller's current terms.
Links from the video
Affiliate disclosure: These links may earn me a commission at no extra cost to you.
Coupon code: NIAFC7061 — Discount amount not stated. Listed in the original video description. No amount or expiry was supplied; check current eligibility and terms.
Links and offers are from the video description. Availability, prices and offer terms may change.
Some links to other products on this page are affiliate links, and we may earn a commission if you buy through them. It costs you nothing extra, and it has not changed what this article says — where a competitor is the better answer, we say so.
