Ophir 3 Slide Harness
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Dialed-in fit and dependable comfort in the Ophir 3 Slide Harness
What Our Gearhead® Experts Are Saying:
"This harness is one of the best values out there—it’s comfy, easy to adjust, and surprisingly light. The split webbing makes long belays way more bearable, and I’ve used it for everything from gym nights to alpine days. Super versatile and durable."
From weekend projects to alpine objectives, the Mammut Ophir 3 Slide Harness handles it all with comfort and versatility. Built with Mammut’s signature split webbing technology, it distributes pressure evenly for better breathability and support during long hangs and belays.
Adjustable leg loops and waistbelt provide a secure, custom fit, and the Slide-Bloc buckles make for quick and intuitive sizing. With four gear loops and a durable design, it’s ready for sport, trad, and everything in between. Whether we’re dialing in technique or swinging leads on a big objective, the Ophir 3 Slide gives us confidence without weighing us down.
Details
- Versatile climbing harness for indoor and outdoor use
- Ideal for sport climbing, trad, and multi-pitch routes
- Split webbing design improves weight distribution and airflow
- Adjustable leg loops and waistbelt for personalized fit
- Easy-to-use Slide-Bloc buckles for quick adjustments
- Four gear loops for organized racking of draws or cams
- High abrasion resistance for long-term durability
- Lightweight construction offers day-long comfort
- Item #MAM003J
- Material
- nylon
- Padding
- Split Webbing technology
- Buckles
- 3 Slide Bloc (self-locking)
- Gear Loops
- 4
- Ice Clipper Slots
- none
- Haul Loop
- yes, 4kN
- Chalk Bag Hanger
- none
- Claimed Weight
- 13.1oz
- Leg Loops
- adjustable
- Manufacturer Warranty
- limited 2 year
- Activity
- climbing
Reviews
Q&A
What do you think about this product?
Overall Rating
4.5 based on 70 ratings
Review Summary
Fits Slightly Small
Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.Customer Images
Here's what customers have to say
The climbing harness is widely praised for its comfort and durability. Reviewers describe it as comfortable, with an excellent fit and secure, non-restrictive feel. The harness is lightweight yet durable, with well-designed gear loops and reinforced belay loops, making it suitable for a variety of climbing activities. While a few minor issues were mentioned, the overall consensus is that this is a high-quality, functional climbing harness that works well for climbers of various skill levels.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageSeptember 2, 2025
Haven’t had a chance to get it out and use it but the build quality feels top notch for the price.
Originally reviewed on ExpertVoice.com
August 28, 2025
Fantastic all around harness
This is such a great harness so far! It is definitely more comfortable than my previous one and holds up well with large whippers. It has great gear loops and the adjustable leg straps are key! I am 5’10”, weigh 170, and the large fits great. Lots of room for adjustment and if you are near that size! Highly recommend.
Originally reviewed on ExpertVoice.com
July 22, 2025
Super comfortable harness I use in the gym. I am 5’9 215 I got a large and it fits great. Just ordered my 21 year old son a medium.
Originally reviewed on ExpertVoice.com
June 24, 2025
Great Harness
fits well. comfortable. looks good. I like the gear loops.
Originally reviewed on ExpertVoice.com
May 16, 2025
Great fit and adjustability
I'm 5'10" and about 250, and the XL fit with room to spare, but the legs didn't have much more room to grow. I love the accessory hooks and elastic components that add a lot of comfort. I also appreciate that they built in material alerts if things are fraying or wearing out. I know that the white will get dirty, but it looks great, is built well, and I really appreciate that it comes with the bag...although it's hard to fit in there after you unfold it.
Originally reviewed on ExpertVoice.com
April 2, 2025
Very versatile.
This is a great, versatile, highly adjustable harness. I needed to replace my ancient cragger, but wanted something I could use for ropes courses (during Adventure Races) which can occur in any weather conditions and therefore may necessitate a very wide range of attire underneath the harness. So far this harness has been great at the gym. Light enough and comfy enough, though not something I’d want to hang in all day if I were working a route. I did try it on over a lot of different layers to get and idea of the range of adjustability and in that regard it is 100% a success. I’d say if you’re looking for a versatile harness this is a great option. If you’re looking for the most comfortable, or the lightest, or the gear-holding-est, there are likely better options out there for you.
Originally reviewed on ExpertVoice.com
March 24, 2025
It's a great harness
I have ran through my previous orphir 3 slide and it is a fantastic overall beginner/intermediate harness. Overall use it for gym and outdoor climbing. I am more into comfort padded climbing harnesses vs lightweight and non adjustable climbing harnesses. The adjustable leg straps and hip are great and can fit me and friends if they borrow the harness. I like the wear stitching being bright red and easy to locate/see is fantastic. I also love the semi hard gear loops they can fit all my quick drawers and climbing gear when outside. Overall would definitely recommend this harness to anyone looking for a comfy great harness.
Originally reviewed on ExpertVoice.com
March 23, 2025
excellent climbing harness
I've been using the ophir 3 for 5 years and have had zero complaints about it. although I don't get to climb as often as I used to, it still is very comfortable and sturdy and I have no concerns going on a climb. I have no doubt that this harness will serve me for several more years, and when I finally do have to lay it to rest, I would buy another mammut harness. 5/5 stars. Definitely recommend.
Originally reviewed on ExpertVoice.com
March 12, 2025
Awesome Fit/Padding
Have climbed in this a few times already and it fits very well. Holds all my gear perfectly and has been pretty comfortable as far as padding goes.
Originally reviewed on ExpertVoice.com
March 2, 2025
Great deal and well made product
So I finally was able to use the harness due to the gym being closed, but the waist portion is a great material and doesn’t feel uncomfortable. The attachment loop for the d ring in the front is solid and I feel safe when climbing. The only complaint I have is the leg straps hurt when being belayed. I would recommend this to anyone getting into rock climbing. It’s an overall well viewed brand and great product.
Originally reviewed on ExpertVoice.com
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