

Darn Tough Men's RFL Utralight Sock
Key item features
- Premium Material: Constructed with 42% Merino Wool, 55% Nylon, and 3% Lycra Spandex for a blend of comfort and durability.
- Advanced Moisture Management: Features fast-action wicking to pull moisture away from the skin, ensuring quick drying and all-weather performance.
- Optimized Fit: Designed with a performance fit to prevent slipping, bunching, and blisters, complemented by a true seamless feel.
- Enhanced Durability: Utilizes fine gauge knitting for unprecedented durability and an ultra-light feel, ideal for race day or a lighter-than-air experience.
- Odor Control: Naturally antimicrobial properties repel bacteria and odor, maintaining freshness during extended wear.
- Over-Calf Height: Provides an over-the-calf height for comprehensive coverage and protection.
- Free shipping
Free 30-day returns
How do you want your item?
Similar styles you might like
Based on items that look similar
Darn Tough Men's Function X Over-The-Calf Cushion Sock $33.00
Sponsored$3300current price $33.00Darn Tough Men's Function X Over-The-Calf Cushion Sock
Shipping, arrives in 3+ daysSockwell Men's Circulator Moderate Graduated Compression Socks L-XL Black Stripe $34.99
Sponsored$3499current price $34.99Sockwell Men's Circulator Moderate Graduated Compression Socks L-XL Black Stripe
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysMen's GOLDTOE® 3-Pack Mild Compression OTC Ribbed Socks $19.95
$1995current price $19.95+$7.99 shippingMen's GOLDTOE® 3-Pack Mild Compression OTC Ribbed Socks
Shipping, arrives in 3+ daysMid-Calf Autumn Winter Merino Wool Socks, Men's Thickened Warm Outdoor Hiking Sports $28.99
$2899current price $28.99Mid-Calf Autumn Winter Merino Wool Socks, Men's Thickened Warm Outdoor Hiking Sports
Shipping, arrives in 3+ daysFalke Airport Plus Socks - Black $34.00
$3400current price $34.00Falke Airport Plus Socks - Black
Shipping, arrives in 3+ daysMan Polyester Socks Socks for Men Long Socks Thin Breathable Socks Calf Socks Sports Socks Football socks $7.62
$762current price $7.62+$2.93 shippingMan Polyester Socks Socks for Men Long Socks Thin Breathable Socks Calf Socks Sports Socks Football socks
Shipping, arrives in 3+ daysMens Eversoft Crew Sock $30.03
$3003current price $30.03Mens Eversoft Crew Sock
Shipping, arrives in 3+ daysFalke SK2 Intermediate Vegan Knee High Socks - Black Mix $34.00
$3400current price $34.00Falke SK2 Intermediate Vegan Knee High Socks - Black Mix
Shipping, arrives in 3+ daysMan Nylon Spandex Socks Socks for Men Long Socks Thin Breathable Socks Calf Socks Sports Socks Football socks $6.88
$688current price $6.88+$2.93 shippingMan Nylon Spandex Socks Socks for Men Long Socks Thin Breathable Socks Calf Socks Sports Socks Football socks
Shipping, arrives in 3+ daysThorlo Thermolite Performance Ski Socks - Black, Size S $22.98 $2.42/in
$2298current price $22.98$2.42/inThorlo Thermolite Performance Ski Socks - Black, Size S
Shipping, arrives in 3+ days
About this item
Product details
FEATURES of the Darn Tough Men's RFL Utralight Sock
- Performance Fit: No slipping, no bunching and no blisters
- Fine Gauge Knitting: Unprecedented durability and the unique "put it on, forget it's on" feel
- Fast Action Wicking: Pulls moisture away from skin
- All Weather Performance: Cool in the summer, warm in the winter
- Naturally Antimicrobial: Repels bacteria and odor
- Guaranteed For Life: No strings no conditions for life
- Merino Wool: Ultimate fiber for breathability and comfort in all conditions
- True Seamless: Undetectable seam fusion for an ultra smooth, invisible feel
- Ultra-Light: the lightest sock for race day or anyone looking for a lighter-than-air feel from a tougher than hell sock
- Over The Calf Height: Name says it all, ultimate height for keeping the outsideGÇôout
Fabric Details
- 55% Nylon, 42% Merino Wool, 3% Lycra Spandex
Products on Sale are Discontinued Styles or Colors.
- Merino Wool
- Moisture Wicking
- Quick Drying
Specifications
Sock rise
Fabric material name
Clothing size group
Gender
Warranty
Warranty information
Similar items you might like
Based on what customers bought
Injinji Ultra Run No-Show $17.99 Was $25.50
Now$1799current price Now $17.99, Was $25.50$25.50Injinji Ultra Run No-Show
Shipping, arrives in 3+ daysHoundstooth Crew 3-Pack $28.50
$2850current price $28.50Houndstooth Crew 3-Pack
Shipping, arrives in 3+ daysDarn Tough Men's Run Quarter Ultra-Lightweight Running Socks, Medium Size, Eclipse $20.99
$2099current price $20.99Darn Tough Men's Run Quarter Ultra-Lightweight Running Socks, Medium Size, Eclipse
Shipping, arrives in 3+ days
Popular items in this category
Best selling items that customers love
Darn Tough Men's Run Quarter Ultra-Lightweight Running Socks, X-Large Size, White $18.95
$1895current price $18.95Darn Tough Men's Run Quarter Ultra-Lightweight Running Socks, X-Large Size, White
44.8 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysDarn Tough Men's Run Quarter Ultra-Lightweight Running Socks with Cushion, Large Size, White $19.95
$1995current price $19.95Darn Tough Men's Run Quarter Ultra-Lightweight Running Socks with Cushion, Large Size, White
Shipping, arrives in 3+ daysDarn Tough Hiker Coolmax Micro Crew Midweight with Cushion, Gray/Black, Large $25.00
$2500current price $25.00Darn Tough Hiker Coolmax Micro Crew Midweight with Cushion, Gray/Black, Large
194.4 out of 5 Stars. 19 reviewsShipping, arrives in 3+ days
Customer ratings & reviews
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Showing 1-3 of 5 reviews
Quality I expect from Darn Tough
I own many socks from Darn Tough and they are true to word in holding up exceptionally well. These are called ultralight socks but I find them to be just a hair heavier then I expected but not enough to send back the ones I ordered. You can buy these and not be concerned with the quality and the fit seems to be true. Great socks.
Comfy low bulk socks.
I have to wear heavy 10inch boots regularly for work, so wanted some over the calf socks. Tried a couple of others, but they were overly bulky and didn’t stay up too well. These fit perfectly, and thin enough to be very comfortable, even with high heat work sites.
RFG socks!
I love how thin these socks are! I use mine for downhill skiing, they're the only type that are thin enough to fit comfortably in my skiboots. My feet are rarely ever cold while skiing, even at our local hill's low temp cutoff of -20F.















































































































