# VSITOO S2: Opening the Filter Cartridge Built into the Bottle Cap

> A look at the removable filter assembly and drinking spout.

Canonical page: https://pyrosoft.pro/blog/this-water-bottle-filters-like-a-pro-vsitoo-s2-review-43704d25

Published: 2026-11-03

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.

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.

- [VSITOO S2 original product link](<https://dada.link/ySpu2a>)

- [Playcast Pavilion original referral link](<https://playcast.io/a/mikethetech>)

**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.