The softest fabric I could find.
I tested dozens of materials over three years. TENCEL™ Lyocell was the only one that made me forget I had underwear on.
Why I Chose TENCEL™ Lyocell
The first time I wore a TENCEL™ Lyocell prototype, I forgot I had underwear on. That had never happened before. It felt like nothing against my skin, stayed dry through a full day of work, and didn't smell after 14 hours. That's when I knew this was the fabric.
Most brands cut costs with cheap modal blends or synthetics. I went with 93% TENCEL™ Lyocell because nothing else came close to that first-wear feeling. It happens to be sustainably sourced from wood pulp in a closed-loop process. But honestly, I chose it because it's the best fabric I've ever worn against my skin.
PERFORMANCE
What It Actually Feels Like
01
Forget You're Wearing Them
Put them on and they disappear. The fiber is so smooth it doesn't catch or irritate. Just soft, all day.
3x softer than cotton
02
Stay Dry Without Thinking About It
Whether it's a long shift or a hard workout, the fabric pulls moisture away before you notice it. No clamminess, no sticking.
50% better than cotton
03
Still Fresh at the End of the Day
14-hour days, gym sessions, summer heat. The fabric naturally resists odor so you stay confident from morning to night.
Naturally anti-bacterial
04
Comfortable in Any Weather
The fibers breathe with you. Cool when it's hot, warm when it's cold. One pair works year-round.
Cool in summer, warm in winter
HOW IT'S MADE
How it's made
From certified forests to the fabric in your underwear
1
Sustainable Harvest
Wood is responsibly harvested from FSC® and PEFC™ certified eucalyptus forests that are sustainably managed and replanted.
2
Pulp Production
Wood is converted to pulp using eco-friendly processes with minimal chemical input and low environmental impact.
3
Closed-Loop Spinning
Pulp is dissolved and spun into fiber in a closed-loop system that recovers and reuses 99%+ of solvents and water.
4
Premium Fabric
Fibers are woven into exceptionally soft, breathable, and durable fabric ready for your boxer briefs.
HOW IT COMPARES
How it compares
| Nether | SAXX | BN3TH | Lululemon | |
|---|---|---|---|---|
| Fabric | TENCEL™ Lyocell | ECOVERO Viscose | TENCEL™ Modal | Nylon/Lycra |
| Leg Grips | Silicone (Trail Grip™) | None | None | Bonded hems only |
| Pouch | Dual-panel (Valley Pouch™) | BallPark (single) | MyPakage (single) | Basic contour |
| Seams | Flatlock (no chafe) | Flat-out seams | Flatlock | Bonded seams |
| Sustainability | Closed-loop, biodegradable | Partially recycled | Responsible forestry | Synthetic (petroleum) |
| Price | $43/pair | $34–42 | $32–36 | $38 |
Nether
$43/pair- Fabric: TENCEL™ Lyocell
- Leg Grips: Silicone (Trail Grip™)
- Pouch: Dual-panel (Valley Pouch™)
- Seams: Flatlock (no chafe)
- Sustainability: Closed-loop, biodegradable
SAXX
$34–42- Fabric: ECOVERO Viscose
- Leg Grips: None
- Pouch: BallPark (single)
- Seams: Flat-out seams
- Sustainability: Partially recycled
BN3TH
$32–36- Fabric: TENCEL™ Modal
- Leg Grips: None
- Pouch: MyPakage (single)
- Seams: Flatlock
- Sustainability: Responsible forestry
Lululemon
$38- Fabric: Nylon/Lycra
- Leg Grips: Bonded hems only
- Pouch: Basic contour
- Seams: Bonded seams
- Sustainability: Synthetic (petroleum)
SUSTAINABILITY
Better for the planet too
The comfort comes guilt-free. Here's why.
Certified Forests
100% of wood comes from FSC® or PEFC™ certified and controlled sustainable forests.
Closed-Loop Process
Award-winning production recovers and reuses 99%+ of water and solvents.
Less Water
Uses 50% less water than conventional cotton farming and processing.
Biodegradable
100% biodegradable and compostable at end of life, returning to nature.
Frequently Asked Questions
What is TENCEL™ Lyocell?
TENCEL™ Lyocell is a premium cellulosic fiber made from sustainably sourced wood pulp, primarily eucalyptus. It's produced by Lenzing AG using a closed-loop process that recovers and reuses over 99% of the water and solvents, making it one of the most sustainable textile fibers available.
Why is TENCEL™ better than cotton for underwear?
TENCEL™ offers several advantages over cotton: it's 50% more efficient at wicking moisture, naturally anti-bacterial (reducing odors), exceptionally soft with a smooth fiber surface, and more environmentally sustainable to produce. Cotton underwear absorbs moisture but dries slowly, while TENCEL™ actively moves moisture away from your skin.
How do I care for TENCEL™ underwear?
TENCEL™ is easy to care for. Machine wash cold with like colors and hang to dry. Avoid heat, which can damage the fibers. Skip bleach and fabric softeners (the fiber is naturally soft). TENCEL™ actually gets softer with each wash while maintaining its shape and performance.
Is TENCEL™ truly sustainable?
Yes. TENCEL™ production uses a closed-loop system that recovers 99%+ of water and solvents. The wood comes from certified sustainable forests (FSC®/PEFC™). It uses 50% less water than cotton and the fibers are 100% biodegradable. Lenzing has won the European Award for the Environment for their sustainable practices.
Will TENCEL™ underwear last as long as cotton?
TENCEL™ Lyocell is known for its high tensile strength, meaning it maintains shape, support, and durability wash after wash. Many customers report their TENCEL™ underwear outlasting their cotton equivalents while staying softer longer.
Feel It For Yourself
The best way to understand this fabric is to put it on. 30-day guarantee if it doesn't blow you away.
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