Shopping basket
  • :

Cart is empty

Carry Bag
Cleaning Spray
Washing Bag

Stop-Valve Nano Default Title

€4,90 | Total :

Stop-Valve developed by the R-PUR R&D team,to completely block the exhaled air

Nano Light, One, Sport: compatible

FiiT®: already included in the box

  • Return free of charge
  • NEW : Delivery in relay point
  • Paypal, Visa, Mastercard
Stop-Valve Nano - €4,90
You've heard of R-PUR


Full filtration

Our patented technology is the first to filter nanoparticles called "very fine particles" PM0.05

Discover our patented filtration

Optimal comfort

The anti-perspirant Thermo-Control® technology allows you to stay cool in summer and protect you from cold air in winter.

Discover our premium materials

Interchangeable filter

Track the wear of your filter with the R-PUR mobile app. The filter needs to be replaced after 5 to 15 weeks of daily use

Discover our mobile app

One size fits all

In average, 99.98% of the air will be filtered thanks to the technical memory-foam face seal on our filters.

Discover your face hermeticity

Our customers say it best 💌

Rated 4.6/5 on Trustpilot!

Easy to use

Fits easily onto your filter for instant use

Optimal breathability

Does not impair breathing in your mask

need help ?

Frequently Asked Questions

Does our mask protect against viruses?

We filter particles up to 20 nanometers in size, so we will filter out most existing viruses.

In the current case of Covid-19, the R-PUR mask will be able to protect you effectively and also protect your close ones thanks to our stop-valve system.

In addition to the protection capacity, we must also take into account the hermeticity factor.

Indeed, depending on different face shapes, your mask will be able to filter 99.98% of the ambient air, which will make it your most effective ally against the spread: we know for example that sputters are carriers of the virus.

You can learn more on our page Our Technologies.

What is the difference between the Nano One and the Nano Light model?

The Nano Light® mask has the same filtration technology as the Nano One®.

We have come to modify the outside part of the mask in order to adapt it to the safety constraints of a cyclist.

For instance, to be more visible on the road: this is why we made it reflective.

It is also more breathable when cycling or running.

The R-PUR Nano One® mask, for example, is much more resistant to cold temperatures: this is a specific constraint for motorcyclists when they ride at high speeds in winter.

In the end, the two models are the same in terms of technology and filtration. We have chosen to widen the range to be able to offer effective solutions that meet the specific needs of each use.

How long does a filter last ?

Our Zephyr algorithm aggregates the average number of kilometres travelled with air pollution data on each route.

It calculates a precise date for the filter replacement in order to guarantee optimal protection.

On average, the filter is replaced after 5 to 15 weeks of daily use, depending on your personal usage and the level of exposure to air pollution.

Are our masks suitable for sports?

During our two years of research and development, we sought to obtain the most protective and breathable solution.

This has been possible thanks to a careful selection of breathable technical materials, the development of a dedicated valve and tests on numerous sportsmen and women.

Our special attachments allow the mask to stay in place even during movements, and the shape memory foam ensures that the mask remains perfectly airtight during your sports sessions.

Limit reached
Sorry, you cannot add more of this product

We try to put a limit for the benefice of everyone