Undyed Wool Sauna Hats & Wide Fit Organic Slippers
Sculpted from dense undyed Tyrolean mountain wool for sauna, cold plunge, and structured daily wear.
Plastic-free. Glue-free. Sculpted in Lithuania for steady heat and long-term use.
FELTFORMA designs wool sauna hats and organic wool slippers for heat exposure, cold plunge, and structured daily wear.
Each piece is shaped from dense, undyed Tyrolean mountain wool to regulate temperature naturally - without synthetic layers, plastic structure, or factory rubber blends.
The result is steady heat in the sauna, stable warmth at home, and materials that hold their form over time.
What Is FELTFORMA Wool Designed For?
Natural Wool. No Synthetics. Built for Heat, Cold & Everyday Comfort.
Why FELTFORMA
Seamless Sculpted Construction
Dense wool is compressed and shaped by hand - not stitched, glued, or layered. This creates a continuous fiber structure that maintains insulation under heat and moisture.
Undyed Tyrolean Mountain Wool
Sourced from small European farms and washed only with water.
No bleaching. No dye baths. No chemical softeners.
Individually Formed in Lithuania
Each piece is shaped in my studio in Vilnius using traditional wet felting techniques. Controlled density. Intentional structure. Built for long-term use.
Glue-Free & Plastic-Free
No synthetic padding. No hidden adhesives. No factory rubber blends.
Only wool and natural caoutchouc rubber when selected.
Natural thermal protection for sauna, steam, infrared, and cold plunge.
Undyed Wool Sauna Hats
Dense wool protects the most heat-sensitive part of the body - the head. The heat builds more evenly. Sessions feel steadier. Recovery feels clearer.
In sauna:
Stable insulation under high temperatures.
In cold plunge:
Moderates shock exposure and retains core warmth.
No synthetic fibers.
No glue.
No artificial layers.
Designed for serious sauna and contrast therapy use.
Hand Sculpted for Long-Term Use
100% undyed mountain wool
Washed only with water
Seamless sculpted construction
Plastic-free and glue-free
Suitable for sauna, steam, infrared, and ice bath
Tailored sizing available on request
Dense wool holds its structure over years of repeated use. These are made to be worn consistently - not replaced seasonally.
Hand-Sculpted for Serious Sauna & Recovery
Chosen by private sauna owners, cold plunge practitioners, and those building permanent wellness spaces across California, Colorado, Texas, Florida, and New York.
If sauna and recovery are part of your lifestyle - not a trend - natural structure matters.
Dense wool. Clean construction. Hand-sculpted for consistent use.
Best-Selling Organic Wool Slippers & Wide Fit Styles
Organic wool slippers designed for temperature balance and grounded daily living.
Warm without overheating.
Supportive without stiffness.
Breathable without synthetic padding.
Available in standard and tailored wide fit options.
Wide Fit Is Not Oversized
Most slippers are built for standard-width feet.
FELTFORMA offers tailored wide fit wool slippers shaped for proportion - not bulk. When width and length are balanced correctly, posture improves and comfort feels structural rather than soft.
After ordering, I personally confirm measurements and may ask for bare foot length and width to ensure proper fit.
True comfort begins with correct shape.
Natural Caoutchouc Rubber Soles
Some slippers are available with natural caoutchouc rubber soles.
The soles are applied without synthetic adhesives and remain flexible underfoot. There are no factory rubber blends or plastic bonding agents in the structure.
This allows natural movement and supports barefoot living while providing protection for indoor and light outdoor wear.
Simple materials. Clean construction.
Who Chooses FELTFORMA?
FELTFORMA is chosen by:
Private sauna owners
Cold plunge practitioners
Performance-focused athletes
Designers building home wellness spaces
Individuals who prefer natural materials over synthetic construction
Chosen across California, Colorado, Texas, Florida, New York, and beyond.
If your sauna and recovery practices are part of your routine - not a trend - this is the material they deserve.
Shipping to the United States and Internationally
All U.S. orders are shipped Delivered Duty Paid (DDP). There are no surprise customs charges or hidden fees.
Your order arrives directly to your door.
FELTFORMA ships worldwide via registered priority air mail. Each shipment includes tracking once dispatched.
Individually Sculpted
Each undyed wool sauna hat and pair of wool slippers is individually sculpted in my studio in Vilnius.
Nothing is factory made.
Nothing is taken from stock.
Every piece is formed with intention before it leaves the studio.
ABOUT FELTFORMA
Hand-Sculpted Wool. Structured for Real Life.
From my studio in Vilnius, Lithuania, I hand-sculpt each pair using dense Tyrolean mountain wool sourced from small European farms.
This is structural wool - formed through traditional wet felting to create seamless, resilient footwear that maintains density over years of wear.
It is structurally formed wool - shaped through traditional wet felting to create seamless, resilient footwear that regulates temperature naturally and maintains its integrity over years of wear.
No synthetic padding.
No hidden glue.
No plastic structure.
Only wool, water, pressure, and time.
FELTFORMA is for those who value material integrity over mass production.
Each pair is made slowly, intentionally, and built to endure.
Selected by Curated International Marketplaces Since 2012
AHALIFE
Curated global luxury marketplace for design-driven living.
FeltForma was featured from 2017 to 2023.
Kaufmann Mercantile
Well-crafted goods for thoughtful living.
Selected from 2017 to 2022.
Trend Hunter
Global trend intelligence platform recognizing innovative design.
Gadget Flow
International product discovery platform for performance-focused design.
HardtoFind
Premium marketplace for unique and artisan-made goods.
Featured from 2012 to 2024.
Touch of Modern
Leading men’s lifestyle platform.
FeltForma featured in 2015 and 2023.
Over a decade of independent work.
Featured by international marketplaces and design platforms recognizing material integrity and structured wool design.
Independently formed. Never mass produced.
What People Are Saying
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The structure is exceptional. They hold their shape, regulate temperature beautifully, and feel supportive without stiffness.
— Verified Buyer, California
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Finally, a true wide fit that doesn’t look bulky. The density and craftsmanship are on another level.
— Verified Buyer, New York
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I use mine for sauna and cold plunge sessions. The insulation is consistent and noticeably more stable than lighter wool hats.
— Verified Buyer, Colorado
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You can feel the difference immediately. Dense, breathable, and made with intention.
— Verified Buyer, Texas
Frequently Asked Questions
What does a wool sauna hat do?
1
An undyed wool sauna hat helps regulate heat during sauna sessions. It protects your head from overheating so heat builds more evenly through the body, allowing steadier sessions and clearer recovery.
Are your slippers glue-free
and plastic-free?
2
Yes.
The wool upper is natural and free from synthetic fibers. Undyed styles are made from pure Tyrolean mountain wool washed only with water. We also offer dyed wool slippers, colored using non-toxic dyes without acid treatment. The wool is not chemically stripped, and you may occasionally notice small traces of natural fibers, even a bit of dry grass — a sign of minimally processed wool.
Optional soles are made from natural caoutchouc rubber and applied without synthetic adhesives. No factory rubber blends or plastic structure are used.
The materials remain simple: natural wool and natural rubber.
Do you offer wide fit wool slippers?
3
Yes.
I offer tailored wide fit wool slippers and can adjust for foot width, arch height, and specific measurements. After ordering, I may request foot length and width measurements to ensure accurate shaping.
How does sizing work for the wool slippers?
4
After you place an order, I will personally contact you to confirm sizing.
For the best fit, I may ask you to measure your bare foot length and width. This allows me to shape the slippers more accurately, especially for wide feet or if you are between sizes.
If you are unsure at any point, you can always write to me and consult. I’m happy to guide you so the fit feels right.
How do I clean a wool sauna hat or wool slippers?
5
Wool is naturally odor-resistant, so frequent washing is usually not necessary. Simply air them out after use.
If needed, gently hand wash in cool water with a mild wool detergent. Press out excess water with a towel, reshape while damp, and let them air dry away from direct heat. Do not machine wash or tumble dry.
With proper care, dense wool keeps its structure and lasts for years.
Why choose undyed wool?
8
Undyed wool avoids synthetic dyes and chemical finishes. Many people prefer natural fibers, especially in high heat environments like a sauna. Dense Tyrolean mountain wool remains breathable, resilient, and well suited for both heat exposure and daily wear.
Are sauna hats suitable for infrared and
steam saunas?
6
Yes.
Dense wool performs well in traditional sauna, steam, and infrared environments.
Can slippers be worn outdoors?
7
Slippers with natural rubber soles are suitable for indoor and light outdoor use. Felt-sole versions are best for indoor wear.