The Alpaca Advantage
Outperforms Merino
The hollow core of natural alpaca fiber insulates up to 30% better than merino wool in any weather even when wet.Ā It is also naturally odor resistant and itch-free.
Thermal Regulation
The natural wicking properties of alpaca fibers help to regulate temperature in any weather.Ā It insulates like wool in the cold and provides an evaporative cooling effect like cotton in hot weather.
Extreme Comfort
The hollow nature of alpaca fibers allow them to continue to provide insulating warmth even while wet.Ā The fibers also continue to wick away the moisture as the fibers dry out.
Explore Unmatched Performance
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MADE IN THE USA
At Altera, we believe your gear should work as hard as you do. Thatās why weāve redefined performance from the ground upāstarting with socks. Using the natural power of alpaca fiber, weāve created socks that outperform wool and synthetics in comfort, durability, moisture control, and temperature regulation.
Born in the rugged fields of Kentucky and tested on trails, slopes, and job sites across the country, Altera socks are built for wherever your feet take you. We source high-quality alpaca fiber and craft our socks in the USA, combining time-tested natural materials with modern innovation.
Our commitment doesnāt end with the sock. Every pair is backed by our Unconditional Lifetime Warrantyābecause performance should never be a question mark. Whether youāre hiking mountains, working long shifts, or just chasing comfort, Altera helps you go further with socks that feel better and last longer.
IT WORKS, GUARANTEED
We stand behind every pair of socks we make. If you're not satisfied with your gear at the time you receive it, please send it back. Damaged due to wear and tear we will replace it.
EXPERT SUPPORT
How can we help? From support with your order, to product questions, to help with ensure you are buying the gear to best fit your need, you have access to our entire team and network of experts.