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Mammut Zephir Altitude Harness
  • Mammut Zephir Altitude Harness
  • Mammut Zephir Altitude Harness

Zephir Altitude



My vote: None ( 4.2 avg )


Ultra-lightweight alpine harness with minimal packing volume for mountain and ski tours. The combination of the patented Split Webbing technology in the hip belt and the high-strength Dyneema® webbing in the leg loop construction ensures a high level of comfort and allows a modern design with large ventilation openings for high breathability. Gear loops and the Drop Seat buckle are positioned to allow the Zephir Altitude to be worn easily together with a backpack with a hip belt.

Retail price

US$ 84.95

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Weight (g)


In grams, the weight, as stated by the manufacturer/brand.

If there are differences in weight (due to multiple sizes or optional accessories) we'll list them here.

The default weight is the middle-most size, often this is size M.

215 g

M : 215 g / 7.6 oz
(weight converted from grams to ounces)
(At this time Mammut only gives out the weight for Size M.)

Gender Men
Sizes XS, S, M, L, XL, XXL
Gear Loops

Number of Gear Loops

Gear loops are used to hold gear (quickdraws, cams, etc) onto your harness. 4 gear loops is most common.

0 - 1 Gear Loops

Most often on full body harnesses or guide/gym style harnesses.

2-3 Gear Loops

Mostly found on lighter harnesses made for [ski] mountaineering or high-end sport climbing where weight is a high priority.

4 - 5 Gear Loops

The standard/most common number for climbing harnesses. Perfect for sport and trad.

More Than 6 Gear Loops

Designed for long multi-pitch and big wall climbing, found on harnesses made to hold the maximum amount of gear.

Worth Considering

Occasionally, the number of gear loops will change on a harness model depending on the size. There could be 7 gear loops for the med/large but only 5 gear loops for the xsmall/small. In this case we list the highest number for the filters, and then write an explanation on the product page like, “Size S/XS can only fit 5 gear loops.”

2 Gear loops
Ice Clip Slots

Ice Clip Slot

Ice clipper slots are made to fit a carabiner that holds ice screws. These slots are generally only used by ice climbers but there is no disadvantage to having them on your harness.

Less than 40% of harnesses will have ice clipper slots. And those harnesses will usually have 2 or 4 slots, often located next to, or between, the gear loops.

Yes, 4
Belay / Tie-In One Loop
Waist Buckle Type Quick Adjust
Leg Buckle Type Clip
Drop Seat Yes
Haul Loop

Haul Loop

Trad climbers often look for a haul loop as they're intended to haul a rope (second line) or pack (while you climb the chimney).

A haul loop can also hold shoes or other accessories. Although not the intended use, it is also commonly used to hold a chalk bag.

No ­
Certification ­
Size Chart

S (will fit the upper range of XS)
Waist : 68-83 cm / 26.8-32.7 in
Legs : 47-55 cm / 18.5-21.7 in
Waist : 74-90 cm / 29.1-35.4 in
Legs : 52-60 cm / 20.5-23.6 in
Waist : 80-96 cm / 31.5-37.8 in
Legs : 57-66 cm / 22.4-26 in
XL (will fit the lower range of XXL)
Waist : 88-104 cm / 34.6-40.9 in
Legs : 61-71 cm / 24-28 in
(we converted centimeters to inches)

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No reviews yet.

Blister Gear Review no rating given just a review

The Mammut Zephir Altitude harness is a great piece of gear for those who often find themselves on glaciers or on easy alpine climbs. It is light, packs small, is simple, and it’s incredibly easy to put on. As long as your objective doesn’t involve vertical, pitched-out climbing or rappels numbering in the double digits, the Zephir Altitude is definitely worth a look.

The Alpine Start Gear Review no rating given just a review

I was very impressed with the attention to detail that’s evident in this well thought out and functional harness. Every feature on the Zephir Altitude has been tailored to work well in a mountaineering environment without compromise and the resulting design is simple, elegant and functional. Needless to say after using it for a few weeks I got rid of my other mountaineering and ski touring harnesses, there’s no way I can go back now.

The UIAA equipment standard provides a baseline for equipment performance in a test lab under controlled conditions on new equipment. Although these test conditions are relevant to the conditions encountered climbing, conditions encountered at the crags and the condition of the equipment are equally important. This recommendation from the UIAA member federation The British Mountaineering Council (BMC) provides vital equipment information that is NOT explicitly addressed in the standard, particularly failure modes of the equipment and recommendations for the use, inspection, maintenance, and retirement of equipment.