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Altitude Boxers - Heavy Duty

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Colour
Imperial
Charcoal
Blue
Size

Almost everyone loves our regular Altitude Boxers. We say ‘almost’ because a few people had a bit of an issue with wear and tear in the crotch area - so we’ve sent in reinforcements by replacing that panel with a more hard wearing Ultra Merino panel and boom! Problem solved!

So you still get the superior comfort and performance of our best-selling lightweight Altitude Merino Underwear, but with an extra durable panel made from the same merino fabric as our Ultra range.

Tag-free labels, flatlock stitching and a flexible, ultra-soft ioMerino elasticated waistband help eliminate chafe and bulk and maximize comfort. The self-fabric fly adds both comfort and function. Say goodbye to ordinary undies, and hello to the Men's Altitude Heavy Duty Merino Boxers.

SIZE & FIT

True to size. 

Model wears size medium. Model is usually a clothing size M, height 186cm, chest 92cm, waist 84cm, hips 93cm.

Same cut, sizing and fitting as our regular Altitude boxers.

Self fabric real fly. Mid rise. 

Designed to fit perfectly under our other layers, they are leaner, firmer, active style.

Size Guide. 

BEST FOR

Everything! 

BENEFITS OF MERINO

LIGHTWEIGHT

THERMO REGULATING

SUPER SOFT & COMFORTABLE

BREATHABLE

MOISTURE WICKING

ODOUR RESISTANT

NATURAL

ETHICALLY MADE

  • 5 stars: 6 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Ardel (Melbourne, AU)
Altitude Boxers are the best

The cut and fabric of the IO 'Altitude' boxers make these the best underpants I have ever had.

S
Sputnik (Adelaide, AU)
My go to boxers

I have a few different styles of the io undies, but these are my go-to boxers. As a style, they're slightly longer in the leg which suits me, especially under long pants (They can be a bit too long under shorter shorts), they have all the benefits of the super soft io merino fabric that i love, but that extra crotch panel does exactly what it's supposed to, and makes these way more durable - so much better value. I know different people have different body shapes and will wear out clothes in different ways/places, but these are perfect for me and a real step up from the standard ones.

K
Kerrie Macdonald (Sydney, AU)
So comfortable

All day long comfort and support love these boxers.

M
Michael Bentley (Hobart, AU)
Improved boxers

The reinforced boxers are a great improvement. Love the winter blue colour.

O
Outback Jack. (Sydney, AU)
Always Quality clothing.

Big improvement for longer lasting boxers very comfortable, best elastic waist ever great design very impressed, happy customer.

P
Patrick Moore (Albuquerque, US)
Excellent

Product and service both excellent. A very good substitute under touring shorts to tight Lycra shorts with thick diaper padding. Buy them snug so that they don’t bunch.

DETAILS

Almost everyone loves our regular Altitude Boxers. We say ‘almost’ because a few people had a bit of an issue with wear and tear in the crotch area - so we’ve sent in reinforcements by replacing that panel with a more hard wearing Ultra Merino panel and boom! Problem solved!

So you still get the superior comfort and performance of our best-selling lightweight Altitude Merino Underwear, but with an extra durable panel made from the same merino fabric as our Ultra range.

Tag-free labels, flatlock stitching and a flexible, ultra-soft ioMerino elasticated waistband help eliminate chafe and bulk and maximize comfort. The self-fabric fly adds both comfort and function. Say goodbye to ordinary undies, and hello to the Men's Altitude Heavy Duty Merino Boxers.

SIZE & FIT

True to size. 

Model wears size medium. Model is usually a clothing size M, height 186cm, chest 92cm, waist 84cm, hips 93cm.

Same cut, sizing and fitting as our regular Altitude boxers.

Self fabric real fly. Mid rise. 

Designed to fit perfectly under our other layers, they are leaner, firmer, active style.

Size Guide. 

BEST FOR

Everything! 

FABRIC

Body

170gsm lightweight

18.5 microns

96% superfine Australian Merino

4% Elastane - for an easy all-way stretch.

A MicroMerino®  Fabric. 

Inseam

Lightweight 160gsm

18.5 microns

83% superfine Australian Merino Wool

12% Nylon for extra durability

5% Elastane for an easy all-way stretch