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Meet the World's Best-Fitting Socks

ExpanTech: Perfect from Heel to Toe

Our feet swell through out the day, and most socks can’t adapt for this. ExpanTech Stretch Technology is a patent pending, innovative knitting technology that allows the sock to continuously adapt to your foot size and shape, ensuring a consistent superior fit.

The Fit

Patent-pending 360-degree stretch for fit and comfort

The Feel

Wicking cotton soothes and cushions

The Family

Designed for men, women, and growing kids

Sock diagram shows ExpanTech Technology with 360 degree stretch for continual optimized fit and comfort. Sock also includes moisture wicking, odor control, staying up with no-slip heel and is made with sustainably grown cotton.

ExpanTech: Perfect from Heel to Toe

Our feet swell through out the day, but most socks can’t adapt for this. ExpanTech Stretch Technology is a patent pending, innovative knitting technology that allows the sock to continuously adapt to your foot size and shape, ensuring a consistent superior fit.

The Fit

Patent-pending 360-stretch for fit and comfort

The Feel

Wicking cotton soothes and cushions

The Family

Designed for men, women, and growing kids

Mens Nn+ crew blue and white striped socks worn on model, while on couch.

ExpanTech for Men

Womens Nn+ white ankle sock worn on model, while on couch.

ExpanTech for Women

: Two boys with soccer ball wearing Nn+ ankle socks in two shades of blue. Mens Category Page -

ExpanTech for Kids

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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