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NN+ logoExpanTech Technology

Proprietary ExpanTech technology is a patent-pending knitting innovation that, combined with specific yarn treatments, allows for unique 360-degree stretch throughout the sock.

Enhanced durability icon
Never slips icon
Moisture wicking icon
Odor control icon
360 degree stretch icon
Super soft icon

Sock innovation for men, women & kids

ExpanTech socks will change the way you think about comfort. With the power of science, our high-performance socks adapt to your foot’s shape for the best, most personalized-feeling fit.

Collage of image showing the ExpanTech socks on adult and kids models.
NN+ logo

A leader in sustainable manufacturing.

Made in the USA in a carbon-neutral facility utilizing emission reducing practices and offsets*

 

*Greenhouse Gas Protocol Scopes 1 & 2

Recycling symbol

80% of raw material waste is recycled every year, saving 2,000 trees annually

Three leaves in a circle icon

90% of our dyes are Global Organic Textile Standard (GOTS) certified

Energy meter icon

Energy-efficient lighting saves over 50,000 kWh/year

Leaf icon

99% of whitening uses GOTS-certified chemicals, which meet set limits of biodegradability and have no adverse effect on the environment

ExpanTech Socks

ExpanTech Socks

Proprietary ExpanTech technology is a patent-pending knitting innovation that, combined with specific yarn treatments, allows for unique 360-degree stretch throughout the sock.

Enhanced durability icon
Never slips icon
Moisture wicking icon
Odor control icon
360 degree stretch icon
Super soft icon
Collage of image showing the ExpanTech socks on adult and kids models.

Sock innovation for men, women & kids

ExpanTech socks will change the way you think about comfort. With the power of science, our high-performance socks adapt to your foot’s shape for the best, most personalized-feeling fit.

NN+ logo

A leader in sustainable manufacturing.

Made in the USA in a carbon-neutral facility utilizing emission reducing practices and offsets*

 

*Greenhouse Gas Protocol Scopes 1 & 2

Recycling symbol

80% of raw material waste is recycled every year, saving 2,000 trees annually

Three leaves in a circle icon

90% of our dyes are Global Organic Textile Standard certified

Energy meter icon

Energy-efficient lighting saves over 50,000 kWh/year

Leaf icon

99% of whitening uses GOTS-certified chemicals, which meet set limits of biodegradability and have no adverse effect on the environment