How it works

One filter. Bottle or tumbler.

Push it into a disposable bottle or fit it in your tumbler. See how it works, what is inside and how it compares.

Four steps, no tools.

The same filter, whichever container you pick up.

Filling a disposable water bottle from a mountain stream

Fill

Any tap, fountain or stream. Fill the bottle you already have.

Pushing the Simple Sip filter into a disposable water bottle

Filter

Push it into the bottle, or into the lid adapter on your tumbler.

Drinking through the Simple Sip filter from a bottle

Sip

Draw through the carbon cartridge. Less chlorine, less sediment, better taste.

Swapping the Simple Sip filter cartridge on a rock by a lake

Swap

When the cartridge is used up, fit a new one. The housing and spout stay.

A disposable bottle, a 40 oz tumbler and a 20 oz tumbler, each fitted with the Simple Sip

The problem with filter bottles

They lock you into their bottle.

Most portable filters only work with the bottle they came in, and few fit an insulated tumbler. Simple Sip pushes into the bottle in your hand and fits the tumbler on your desk with a lid adapter.

  • Disposable water bottles, no adapter needed
  • 20, 30 and 40 oz tumblers with the lid adapter
  • A housing that telescopes to the right depth

What's inside

A cutaway of the housing, straight from the engineering files.

Cutaway of the Simple Sip housing showing the carbon cartridge and the pre-filter
  • 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.

Pre-order · $19.99
FeatureSimple SipA filter bottle
Works with the bottle you already haveYesNo
Fits your tumbler with a lid adapterYesNo
What you carryThe filter. One piece.Their bottle, every time.
Switching containersMove the filter.Buy another of their bottles.
Price$19.99Varies by brand.

Find your adapter

One filter. Three tumbler sizes.

Pick the adapter that matches your tumbler. The same Simple Sip filter fits all three.

40 oz Stanley style, with a handle $9.99 See this adapter 30 oz Yeti style $9.99 See this adapter 20 oz Yeti style $9.99 See this adapter

Using a disposable water bottle? The filter fits it on its own, no adapter needed.

A water bottle with the Simple Sip filter at a lake in golden evening light

Ready when you are.

Pre-order now and your filter ships early 2027. Not sure yet? The waitlist costs nothing.

Pre-order · $19.99Join the waitlist