We Didn't Invent Hemp. We Unlocked It.
We Didn't Invent Hemp. We Unlocked It.
The industry has lacked a natural fiber that performs — Until Now.
Meet Seff
Born for bodies in motion. Perfected by people who know the natural fiber game. Blends easy. Plays nice. Drops into your supply chain – no drama. Feels like a dream. Performs like a pro.
And yes, it’s ready now.
The One Natural Fiber Delivering Performance, Scalability, Sustainability.
High Performance
Real Performance. Natural Comfort.
SEFF is fine, long, airy hemp fiber engineered for natural perfection. Luxury like linen. Softer than your Sunday sheets. Moves air like the wind. Moves moisture like a pro. Prevents odor, protects against UV. And gets better with age.
Supply Chain Ready
High Performance Without High Maintenance.
Spinnability is SEFF’s middle name. Runs fast on your existing equipment. No CapEx. No headaches. Blends at a sweet spot 40%+ with cotton, wool, MMCFs, recycled fibers and synthetics. Tested. Trusted. Across 8 countries.
SEFF Products
SEFF ONE
One fiber. Infinite blends. SEFF One is the natural foundation for next-generation textiles—versatile, soft, and designed for seamless integration across global supply chains.
SEFF PRIME
The pinnacle of natural performance. SEFF Prime delivers unmatched softness and refinement for luxury-grade yarns—engineered to empower designers, elevate collections, and feel extraordinary.
SEFF Co-Labs
SEFF Co-Labs: Where It Gets Real
SEFF Co-Labs is designed to be an extension of existing brand-led white space collaborations.
Blend development and prototyping
Mill onboarding + best practices guidance
Impact measurement support
Creative collaboration with people who care about the planet and the product
We speak design. We speak production. We speak carbon
We don’t waste your time
Meet the genius minds and hearts guiding your co-lab:
Meet the genius minds and hearts guiding your co-lab:
Let’s Make Something That Lasts
Your next fan-favorite pant.
Your first performance hemp hoodie.
The piece and supply chain that changes everything.
Let’s create it. Let’s build it. For real this time.
We have fiber ready to ship anywhere in the world, and are ready to guide your supply chain team through testing and interpreting performance.
SEFF Co-Labs is pumped to co-create something amazing with you. Connect to share your brief and explore what’s possible.
SEFF Technology
Nano-Pulse™: The Spark That Changes Everything
Biotech meets high-voltage physics to unlock hemp’s full potential — without tearing it apart.
This isn’t a tweak. It’s a tectonic shift in natural fiber processing.
SEFF’s patented Nano-Pulse™ technology is a first-of-its-kind process that uses controlled electric discharges in water — yes, literal lightning in a tank — to gently dissolve the glue binding hemp fibers together. No harsh mechanical shredding. No toxic soup. Just soft, uniform, cotton-grade hemp fiber that spins like a dream.
Precision Pulse Discharges
Selectively vaporize lignin and pectin without damaging the cellulose.
Biochemical Pre-Treatment
Primes the fiber for clean, surgical separation.
Minimal Mechanical Handling
Preserves length, strength, and spinnability.
Closed-Loop Processing
Recyclable chemistry, upcycled byproducts, and planet-friendly full stop.
Cottonization at Scale
Spinnable on ring, open-end, woolen, or air-jet systems — with blends up to 70% hemp.
Global Farm Network
Cultivation innovation from seed to spinner, built with hands in the soil.
Precision Pulse Discharges
Selectively vaporize lignin and pectin without damaging the cellulose.
Biochemical Pre-Treatment
Primes the fiber for clean, surgical separation.
Minimal Mechanical Handling
Preserves length, strength, and spinnability.
Closed-Loop Processing
Recyclable chemistry, upcycled byproducts, and planet-friendly full stop.
Cottonization at Scale
Spinnable on ring, open-end, woolen, or air-jet systems — with blends up to 70% hemp.
Global Farm Network
Cultivation innovation from seed to spinner, built with hands in the soil.
Get in Touch
Headquarter
Nordon House
Lower Ground Floor
332a Meanwood Road
Leeds LS7 2JF
UNITED KINGDOM
If you’re building the future of natural casual comfort or athleisure that doesn’t quit, meet your new secret weapon: SEFF—the world’s most advanced hemp fiber.
Precision Pulse Discharges
Selectively vaporize lignin and pectin without damaging the cellulose.
Biochemical Pre-Treatment
Primes the fiber for clean, surgical separation.
Minimal Mechanical Handling
Preserves length, strength, and spinnability.
Closed-Loop Processing
Recyclable chemistry, upcycled byproducts, and planet-friendly full stop.
Cottonization at Scale
Spinnable on ring, open-end, woolen, or air-jet systems — with blends up to 70% hemp.
Global Farm Network
Cultivation innovation from seed to spinner, built with hands in the soil.