Circular innovation for water filtration

Filter smarter. Preserve resources. Turn waste into value.

A solution for every use

Private and public swimming pools

Optimize water quality while reducing maintenance consumption and discharge.

Agricultural and industrial installations

Filter irrigation water or process flows with a reliable, uninterrupted medium.

Licensed deployment

Our technology is replicable and turnkey. Integrate a local unit in your territory.

Kind Of Blue is a French circular-economy innovator specializing in water filtration. We turn glass waste into a high-performance, cost-effective, and sustainable filtration solution. Our flagship product, SANDBAG®, is a filtration media capable of delivering up to 90% water savings in sand filter systems. After entering the leisure market (swimming pools) in 2024, we are expanding into agriculture (drip irrigation) from 2026, while also addressing industrial applications through our ongoing R&D programs. Kind Of Blue is the only company offering this glass-upcycling filtration model, protected by an international patent, a registered trademark, and recognized with multiple industry awards.

KOB rethinks water filtration

Our industrial solutions

Licensed deployment of production units for our products, in France and internationally.

Our products

Innovative water filtration solutions for irrigation, leisure and industry.

Research & Development

Development of new technical filtration solutions for water conservation.

Photo credit : IFTS

SANDBAG®

Next-generation filtration media

SANDBAG® is a ready-to-use filtration solution made from recycled glass and encapsulated in a recyclable textile bag made of recycled technical fibers. Compatible with all sand filters, it delivers ultra-high-performance filtration down to 12 microns, while dramatically reducing water consumption during backwashing. Designed to last over 7 years, SANDBAG® operates without clogging and without complex maintenance.

12 microns

Proven filtration fineness, superior to most conventional filtration media.

Only one backwash per year

Up to 90% water savings compared to traditional sand filters.

Over 7 years

Average lifespan of SANDBAG®, with no loss of performance.

KOB at the forefront of new models

irrigation agricole

Glass recycling

Rethinking a low-carbon recycling industrial model that can be replicated in all the world's major cities.

irrigation agricole

Water filtration

Reinventing systems to turn filtration into an opportunity to save water.

irrigation agricole

Waste valorization

Giving glass a second life, with strong commercial and environmental added value for a sustainable business model.

irrigation agricole

Circular economy

Mettre en œuvre un modèle économique à fort impact environnemental et social, impliquant les écosystèmes locaux à l’échelle mondiale​.

Filtration eau

Who we are

Kind Of Blue is a French industrial innovator driving the environmental transition. We turn recycled glass into high-performance filtration media, creating a new circular model to protect water — a critical global resource.

filtration de piscine

They talk about us

Find Kind Of Blue in both specialist and mainstream media, including L’Usine Nouvelle, BFM TV, La Tribune, RTL and more...

KOB deploys its industrial glass valorization solution

Juillet 2024 S’appliquant à la filtration des eaux de piscine, celle des eaux pour l’irrigation agricole ou encore au recyclage des eaux usées, KOB a développé, breveté et fabrique à partir de déchets de verre dans sa propre unité industrielle, la solution de charge...

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Want to go further with us?

Are you a professional, a local authority, or an industrial player?

Let’s discuss the best way to integrate our solutions into your projects.