Altera Performance
Built for hard wear. Backed for life.
Premium natural-performance socks engineered for real conditions. Every pair backed unconditionally for life — if they ever wear out, we replace them.
Ankle Alpaca Socks
Altera's ankle socks are thoughtfully designed to provide maximum comfort in any conditions, ensuring your feet stay supported and protected during your outdoor pursuits. Moisture and sweat can quickly become a nuisance during intense activities. Altera's alpaca socks excel in moisture management, keeping your feet dry and comfortable throughout your outdoor pursuits. Plus, shop with confidence with our unconditional lifetime warranty.
Backed for life
If they wear out, we replace them.
Every Altera pair carries the unconditional Lifetime Warranty. No fine print, no expiration, no original-purchaser clause.
See the warranty →