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4 Slide Climbing Harness

4.518518518518518 out of 5 stars
27 Reviews
Color:Dark Ceramic


Size Chart


Why We Like The 4 Slide Climbing Harness

We like extra comfort on projecting days, so we step into the 4 Slide Climbing Harness. We clip our chalk bag to the back loop to regain friction and courage as we approach the crux. When the wall spits us off, the cushy leg loops and waist help relieve pressure while we hang to study the route and pantomime beta.


  • All-round climbing harness for beginners and experts alike
  • Dual waist adjustment to keep it centered
  • Adjustable leg loops for all-around customized fit
  • Self-locking buckles for quick and secure adjustments
  • Padded leg loops and waist for high comfort
  • Four gear loops for organization
  • Item #MAMU5AZ
92% nylon, 8% elastane
4 Slide-Bloc (self-locking)
Gear Loops
Ice Clipper Slots
Chalk Bag Hanger
Claimed Weight
1lb 1.3oz
Leg Loops
Manufacturer Warranty
2 year

Overall Rating

4.5 based on 27 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 2 reviews
4 Stars - 6 reviews
5 Stars - 18 reviews

Fits Slightly Large

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.
Runs smallTrue to sizeRuns large

What do you think about this product?


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4 out of 5 stars

May 30, 2024

Great harness!

I love this harness! It’s incredibly comfortable and well padded. If you don’t mind the extra bulk that comes with that, this is a great choice for you! It feels very durable and well-made. The one issue that I’ve had with it is that it takes a bit longer to don, however this is something that I personally don’t mind, as I love the extra comfort this provides. I think this is a great product for beginners and intermediate-experts in gym or outdoor environments.

Arlo G

Originally reviewed on

5 out of 5 stars

April 8, 2024

Great harness

Nice harness overall. The buckles allow for ample amounts of tightening up. It’s comfy while climbing. Price is right.

Dave R

Originally reviewed on

5 out of 5 stars

January 12, 2024

Super high quality. Plus the 4 way adjustment is super convenient for that perfect fit.

Andrew P

Originally reviewed on

4 out of 5 stars

December 6, 2023

Great but uncomfortable on the thigh

I've used it once or twice and have initial impressions
Size Bought:

I am a total beginner so I may be wearing it wrong, but I purchased these along with the Selenas to see which ones worked for me.. I tried both of them a few times on an auto-belay system. After trying the 4-slide I felt like the metal strap fasteners were digging into my thigh. I had them at a snug setting, just enough where it wouldn't squeeze. Now writing this post I realized I should've loosened it so that it may have helped. Other than that I love the padding on the waist and the amount of adjustments available on the strap!

Joyce W
4 out of 5 stars

November 8, 2023

Phenomenal All-round Harness

As someone who is getting more and more into climbing, I typically want to look for a lighter yet equally effective harness as my previous BD Solution harnesses with generous gear loops, but the light-weighted nature of the Mammut Sender harness. This 4-Slide Harness is a little too much for me, mainly because I'm lazy and would prefer the single buckle adjustment as opposed to adjusting all 4. While it is definitely amazing for adjustment and even to share between friends of similar waist size, I would want something a bit lighter and less finnicky in terms of time taken to put on.

Originally reviewed on

4 out of 5 stars

October 5, 2023

The inner foam is pretty thick and stiff. It folds nicely because of the slit down the middle of the foam in the back. The gear loops are rather floppy where they meet the waist belt, I'm not a fan of them. It is a good harness for gym use, it is also pretty comfortable. Due to the 2 waist buckles, it can fit a super wide range of people so I can lend it to anyone and they will probably fit it.

Elijah C

Originally reviewed on

3 out of 5 stars

May 17, 2023

good extra harness

Ok for a spare harness, but not that great for your primary. Bulky and not lightweight

Andrew K

Originally reviewed on

5 out of 5 stars

February 20, 2023

Durable, comfortable, versatile

I use this both for gym and outdoor climbing. It's very comfy, so I can sit in it while projecting tough sport climbs. It's also super durable and can take its fair share of abuse. The belay loop has a built in wear indicator which makes deciding on whether to retire it super easy! If you're looking for a harness for the first time and are having trouble deciding, this harness would be a good place to start. It's super affordable, will last a long time, and fits many different body shapes! The only downside is that it's not super compact! It's heavier than most harnesses and will take up a lot of space in your gear bag.

Cameron S

Originally reviewed on

5 out of 5 stars

October 13, 2022

Uber comfy harness

I've put it through the wringer
Size Bought:
Small- M
5' 3"

I love this harness! It is super comfortable and adjustable. One of my favorite aspects of it is that massive gear loops which are perfect for trad and specifically Indian Creek style climbing. It is perfect for single pitch climbing. I've tried to take it up on a few multi pitches and it wasn't quite as comfortable for long days as I had hoped

Johanna C
5 out of 5 stars

October 12, 2022

Very comfortable and easy to adjust straps and clips. Great for lead climbing. Little big for a medium.

Nick D

Originally reviewed on