Fill
Any tap, fountain or stream. Fill the bottle you already have.
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Universal water filter
Simple Sip
One filter that pushes into a disposable bottle or fits your tumbler with a lid adapter. Activated carbon plus a micro-mesh pre-filter. Patent pending.
$19.99Pre-order
- Pushes into standard disposable water bottles
- Fits 20, 30 and 40 oz tumblers with a lid adapter
- Telescoping housing matches the bottle's depth
- Activated carbon plus a micro-mesh pre-filter
Ships early 2027Pre-order now. Charged in full at checkout.
- Patent pending
- NSF/ANSI testing underway
- Easy to clean
- Removable mouthpiece
Secure checkout
Description
One filter for the bottle you already own
Simple Sip pushes into a standard disposable water bottle on its own. Add a lid adapter, sold separately, and the same filter works in a 20 oz or 30 oz Yeti style tumbler or a 40 oz Stanley style tumbler with a handle.
What it does
An activated carbon cartridge reduces chlorine and sediment and improves the taste and odor of tap water. A micro-mesh pre-filter catches particles before they reach the carbon. Independent testing to NSF/ANSI standards is underway.
Made to carry
The housing telescopes to the depth of your bottle or tumbler, with food-safe silicone seals, a removable mouthpiece for rinsing and a protective cap for your bag. Patent pending.
Simple Sip is not affiliated with Stanley or Yeti; the names describe tumbler styles.
What's in the box
The Simple Sip filter: the bottle adapter cap, the telescoping housing with the activated carbon cartridge and micro-mesh pre-filter, the removable silicone mouthpiece and a protective cap. Tumbler lid adapters are sold separately.
Which tumblers it fits
On its own, the filter fits standard disposable water bottles. For a tumbler, add the lid adapter that matches it: 20 oz or 30 oz for Yeti style tumblers, 40 oz for Stanley style tumblers with a handle. Simple Sip is not affiliated with Stanley or Yeti; the names describe tumbler styles.
Cleaning
The silicone mouthpiece pulls off for rinsing, and the protective cap keeps the spout clean in your bag. We will publish full care instructions for the housing and cartridge before the first batch ships.
Shipping and pre-order
Pre-orders are expected to ship in early 2027. You are charged in full at checkout and we email a tracking number the day your order leaves. If the date moves, we email you and you can cancel for a full refund. Shipping cost is shown at checkout before you pay.
Four steps, no tools.
The same filter, whichever container you pick up.
Filter
Push it into the bottle, or into the lid adapter on your tumbler.
Sip
Draw through the carbon cartridge. Less chlorine, less sediment, better taste.
Swap
When the cartridge is used up, fit a new one. The housing and spout stay.
What's inside
A cutaway of the housing, straight from the engineering files.
- Activated carbon cartridgeReduces chlorine and sediment, improves taste.
- Micro-mesh pre-filterCatches particles before they reach the carbon.
- Telescoping housingFood-safe silicone seals at every length.
The facts, as they stand
- Patent pendingProvisional patent application filed.
- NSF/ANSI testing underwayIndependent third-party testing before launch.
- Three tumbler adapters20 oz, 30 oz and 40 oz, sold separately.
- Easy to cleanRemovable silicone mouthpiece and a protective cap for transport.
Side by side
Simple Sip or a filter bottle?
What changes when the filter is the product, not the bottle.
| Feature |  Simple Sip | A filter bottle |
|---|---|---|
| Works with the bottle you already have | Yes | No |
| Fits your tumbler with a lid adapter | Yes | No |
| What you carry | The filter. One piece. | Their bottle, every time. |
| Switching containers | Move the filter. | Buy another of their bottles. |
| Price | $19.99 | Varies by brand. |
Wherever you drink
Pick the container. The filter is the same.
Trail
Disposable bottle. The filter alone.
Pre-order the filter
Travel
Airport water, hotel taps, the train.
Pre-order the filter
Job site
On a 40 oz tumbler, all shift long.
See the adapters
Everyday
Desk, gym bag, car cup holder.
See the adapters1 / 4
Good to know
Questions, answered.
Shipping, fit, testing and cleaning, in plain words.
When does it ship?
Pre-orders are expected to ship in early 2027. If the date moves, we email you and you can cancel for a full refund.
What is in the box?
The Simple Sip filter: the bottle adapter cap, the telescoping housing with the activated carbon cartridge and micro-mesh pre-filter, the removable silicone mouthpiece and a protective cap. Tumbler lid adapters are sold separately.
Which tumblers does it fit?
On its own, Simple Sip fits standard disposable water bottles. With a lid adapter it fits 20 oz and 30 oz Yeti style tumblers and 40 oz Stanley style tumblers with a handle. Simple Sip is not affiliated with Stanley or Yeti; the names describe tumbler styles.
Is it certified?
Not yet. Independent testing to NSF/ANSI standards is underway, and we will post the results here when they are in. Until then we describe what the filter is designed to do and publish no test figures.
What does the filter reduce?
An activated carbon cartridge reduces chlorine and sediment and improves the taste and odor of tap water. A micro-mesh pre-filter catches particles before they reach the carbon.
How do I clean it?
The silicone mouthpiece pulls off for rinsing, and the protective cap keeps the spout clean in your bag. We will publish full care instructions for the housing and cartridge before the first batch ships.
Not ready yet? Join the waitlist.
One email when the first batch ships, and one before it does. Nothing else.
Pre-orders are charged in full at checkout and ship early 2027.