Adventure · Maximum Warmth · Extreme Durability

Adventure Heavyweight 14" OTC Alpaca Sock

Heavyweight cushion and over-the-calf coverage for cold mornings, tall boots, and long days in the field, on the trail, or on the job.

Brown tweed Adventure heavyweight 14" OTC alpaca performance sock front right view

Engineered Durability

Blend Ratios + Reinforcement

Temperature Regulation

Cool When Hot. Warm When Cold.

Moisture Management

Dry Feet. Blister Free.

Odor Resistant

Antimicrobial

Adventure · Maximum Warmth · Extreme Durability

Adventure Heavyweight 14" OTC Alpaca Sock

Heavyweight cushion and over-the-calf coverage for cold mornings, tall boots, and long days in the field, on the trail, or on the job.

$40~$13 / year based on 3 years of wear

Adventure 14" OTC is our maximum-cushion, over-the-calf sock built for cold weather, tall boots, hunting, hiking, and hard-wearing work. The heavyweight knit adds warmth and underfoot comfort, while reinforced heel and toe zones help it hold up through long days and repeated wear.

Color Brown Tweed

Brown Tweed Black Tweed

Size Medium

M L XL

Sock size	Men's US	Women's US
S	3–5	4–6
M	5–9	6–10
L	9–12	10–13
XL	12–14	13–15

Run true to size. If between sizes, size up for thicker boots.

★ Save 15% on 3 pairs · 20% on 5+

Lifetime Warranty

Build your rotation

Same blend system. Different builds.

Most Altera customers run a multi-pair rotation — same engineered blend, different cushion and height for what the day demands.

Pair with

Adventure Heavyweight 9" Crew Alpaca Sock

$36

Pair with

Prevail Mid-Weight 14" OTC Alpaca Sock

$40

Pair with

Conquer Lightweight 14" OTC Alpaca Sock

$30

Why Adventure performs

maximum cushion for cold, demanding days.

Adventure is built for the days that ask more from your socks: cold starts, heavier boots, long hours, rough terrain, and repeated wear in the field, on the trail, or on the job.

01

maximum cushion

Our thickest knit adds underfoot comfort and impact absorption for long days in boots, cold-weather hikes, hunts, and hard-wearing work.

Mechanism · Heavyweight terry knit

02

cold-weather regulation

Hollow-core alpaca helps hold warmth when conditions are cold, then releases heat as your body warms up.

Mechanism · Hollow-core alpaca fiber

03

freshness for repeat wear

Built with natural alpaca and antimicrobial fiber to help socks stay fresher longer through extended wear and multi-day use.

Mechanism · alpaca + antimicrobial fiber

04

Reinforced durability

Reinforced heel and toe zones help handle boot friction, pack straps, rough terrain, and the repeated wear that breaks down lighter socks.

Mechanism · Reinforced zones

Specifications

Line

Adventure · Outdoor · Work

Height

14" OTC / Over-the-Calf

Weight

Heavyweight full cushion · Full terry loop

Blend

42% Alpaca · 28% Polyester · 15% Nylon · 14% Antimicrobial · 1% Spandex

Best For

Hunting · Tall boots · Cold weather · Work · Extended outdoor wear

Features

Reinforced heel and toe · Arch support · Over-the-calf coverage

Care

Machine wash cold · Tumble dry low · No bleach

Warranty

Unconditional lifetime — any wear-out, any age

REAL WEAR. REAL FEEDBACK.

REVIEWS

See what customers say after wearing Altera where socks actually have to perform: work, outdoor, sport, travel, and everyday life.

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Unconditional Lifetime Warranty

If they ever wear out — heel, toe, cuff, anything — we replace them. No fine print, no original-purchaser clause, no expiration on any line we make.

See full warranty →