The Sender Harness is extremely light and ready to perform on your next climbing trip. It uses laser-cut fabric for breathability and durability while keeping weight low. Split Webbing technology ensures the weight is spread evenly for comfort during climbs. The harness has a performance fit designed for sport climbers. It features two large pre-shaped gear loops and two lightweight gear loops for easy gear attachment. The tie-in loop is protected with high-quality plastic to prevent wear and includes an indicator that shows when the harness needs to be replaced. There is a strong haul loop rated at 2 kN and an attachment point for a chalk bag. The harness uses hot-forged aluminum buckles that are easy to adjust and includes four ice clipper slots. It has a unisex design and comes with a bag for convenient transport.
The Sender Harness is extremely light and ready to perform on your next climbing trip. It uses laser-cut fabric for breathability and durability while keeping weight low. Split Webbing technology ensures the weight is spread evenly for comfort during climbs. The harness has a performance fit designed for sport climbers. It features two large pre-shaped gear loops and two lightweight gear loops for easy gear attachment. The tie-in loop is protected with high-quality plastic to prevent wear and includes an indicator that shows when the harness needs to be replaced. There is a strong haul loop rated at 2 kN and an attachment point for a chalk bag. The harness uses hot-forged aluminum buckles that are easy to adjust and includes four ice clipper slots. It has a unisex design and comes with a bag for convenient transport.
The Sender Harness is extremely light and ready to perform on your next climbing trip. It uses laser-cut fabric for breathability and durability while keeping weight low. Split Webbing technology ensures the weight is spread evenly for comfort during climbs. The harness has a performance fit designed for sport climbers. It features two large pre-shaped gear loops and two lightweight gear loops for easy gear attachment. The tie-in loop is protected with high-quality plastic to prevent wear and includes an indicator that shows when the harness needs to be replaced. There is a strong haul loop rated at 2 kN and an attachment point for a chalk bag. The harness uses hot-forged aluminum buckles that are easy to adjust and includes four ice clipper slots. It has a unisex design and comes with a bag for convenient transport.
The Sender Harness is extremely light and ready to perform on your next climbing trip. It uses laser-cut fabric for breathability and durability while keeping weight low. Split Webbing technology ensures the weight is spread evenly for comfort during climbs. The harness has a performance fit designed for sport climbers. It features two large pre-shaped gear loops and two lightweight gear loops for easy gear attachment. The tie-in loop is protected with high-quality plastic to prevent wear and includes an indicator that shows when the harness needs to be replaced. There is a strong haul loop rated at 2 kN and an attachment point for a chalk bag. The harness uses hot-forged aluminum buckles that are easy to adjust and includes four ice clipper slots. It has a unisex design and comes with a bag for convenient transport.
Last updated at 04/26/2026 17:47:35
Mammut Sender Harness climbing harness-Safety Orange-M
Delivery by 5 May $64.36
Mammut Sender Harness Black M
Delivery $19.99
Mammut Sender Harness - SS26 MAM352 | Size EU Medium in Safety Orange
Delivery $29
Sender Harness M
Free delivery between 30 Apr – 8 May
Sender Harness, Safety Orange / M
Free delivery
Mammut Sender Unisex Climbing Harness - Safety Orange - M
Free delivery
Mammut Sender Harness (Colour: Orange, Size: Medium)
Free delivery between 27 Apr – 4 May
originally posted on ozbackcountry.com.au
Over the years I've had a number of Black Diamond and Petzl harnesses. This one beats them hands down. It feels so light, like you're almost wearing nothing/ Before this I has been sceptical that 50 or 100g here or there in a harness made a difference, but it somehow does.But more importantly, even though it feels like you are wearing nothing, it somehow is the most comfortable harness I've worn. Taking falls, or hanging when you are trying to work out the next sequence, or belaying, it is just really really comfortable, with no individual pressure points. My partner, who got one after she had tried on mine, noted that it doesn't cause the same pressure in her hips like other harnesses do.I'm not a big reviewer, but I think this is such a great product that I ... MoreOver the years I've had a number of Black Diamond and Petzl harnesses. This one beats them hands down. It feels so light, like you're almost wearing nothing/ Before this I has been sceptical that 50 or 100g here or there in a harness made a difference, but it somehow does.But more importantly, even though it feels like you are wearing nothing, it somehow is the most comfortable harness I've worn. Taking falls, or hanging when you are trying to work out the next sequence, or belaying, it is just really really comfortable, with no individual pressure points. My partner, who got one after she had tried on mine, noted that it doesn't cause the same pressure in her hips like other harnesses do.I'm not a big reviewer, but I think this is such a great product that I had to write something, especially as there aren't that many reviews of the harness out there.
originally posted on mammut.com
I probably could have gotten away with buying a medium since I usually wear 32W pants in most brands minus a couple of high ends. So I was worried the Medium would have been small if I had added layers. So I ordered a Large. It’s not to big but the Sender has a retention band on the back of the adjustable(waist) clasp to allow the access to be stowed away which works. Great feel, super comfortable, great functionality, pre-shaped gear loops are perfect, adjustments are smooth/easy to use with gloves, and all around a great addition to anyone’s gear bag. 10/10 would recommend.
originally posted on moosejaw.com
This is a very comfortable harness with a good set of features. The front gear loops do a good job at feeding quickdraws as you climb, and the rear ones feel comfortable with a backpack on and reduce the weight without reducing functionality too much. The split webbing seems to split into 2 sections in the leg loops and waistband, which distributes load a bit worse than the 3 section webbing you sometimes see, but allows for better breathability, and it contours over bony parts of my body better. It's not necessarily less comfortable than 3 section webbing, it's just a different feel. Compared to my black diamond harnesses, the buckle is smoother and there's a higher degree of waistband adjustability.
| Weighting Feel | Ultra Lightweight |
| Durability | Durable |
Mammut Sender Harness climbing harness-Safety Orange-M
Delivery by 5 May $64.36
Mammut Sender Harness Black M
Delivery $19.99
Mammut Sender Harness - SS26 MAM352 | Size EU Medium in Safety Orange
Delivery $29
Sender Harness M
Free delivery between 30 Apr – 8 May
Sender Harness, Safety Orange / M
Free delivery
Over the years I've had a number of Black Diamond and Petzl harnesses. This one beats them hands down. It feels so light, like you're almost wearing nothing/ Before this I has been sceptical that 50 or 100g here or there in a harness made a difference, but it somehow does.But more importantly, even though it feels like you are wearing nothing, it somehow is the most comfortable harness I've worn. Taking falls, or hanging when you are trying to work out the next sequence, or belaying, it is just really really comfortable, with no individual pressure points. My partner, who got one after she had tried on mine, noted that it doesn't cause the same pressure in her hips like other harnesses do.I'm not a big reviewer, but I think this is such a great product that I ... MoreOver the years I've had a number of Black Diamond and Petzl harnesses. This one beats them hands down. It feels so light, like you're almost wearing nothing/ Before this I has been sceptical that 50 or 100g here or there in a harness made a difference, but it somehow does.But more importantly, even though it feels like you are wearing nothing, it somehow is the most comfortable harness I've worn. Taking falls, or hanging when you are trying to work out the next sequence, or belaying, it is just really really comfortable, with no individual pressure points. My partner, who got one after she had tried on mine, noted that it doesn't cause the same pressure in her hips like other harnesses do.I'm not a big reviewer, but I think this is such a great product that I had to write something, especially as there aren't that many reviews of the harness out there.
I probably could have gotten away with buying a medium since I usually wear 32W pants in most brands minus a couple of high ends. So I was worried the Medium would have been small if I had added layers. So I ordered a Large. It’s not to big but the Sender has a retention band on the back of the adjustable(waist) clasp to allow the access to be stowed away which works. Great feel, super comfortable, great functionality, pre-shaped gear loops are perfect, adjustments are smooth/easy to use with gloves, and all around a great addition to anyone’s gear bag. 10/10 would recommend.
This is a very comfortable harness with a good set of features. The front gear loops do a good job at feeding quickdraws as you climb, and the rear ones feel comfortable with a backpack on and reduce the weight without reducing functionality too much. The split webbing seems to split into 2 sections in the leg loops and waistband, which distributes load a bit worse than the 3 section webbing you sometimes see, but allows for better breathability, and it contours over bony parts of my body better. It's not necessarily less comfortable than 3 section webbing, it's just a different feel. Compared to my black diamond harnesses, the buckle is smoother and there's a higher degree of waistband adjustability.
Great product! Lightweight and versatile. I use it 2-3 times a week for sport climbing or multipitch and thanks to the reinforced plastic ring it lasts a very long time!
In general, super comfortable. Got this in XS, and I wear XS in the Ophir 3 Slide Women.I would have liked a ladies version, or at least have the option to extend the elastics going to the leg loops a bit longer since they ride up as is at the longest length.I would say the regular type of adjustable leg loops or the non-adjustable ones are more comfortable compared to the fast-adjust (where the straps are sewn into the leg loops dig into the side of the thighs, so longer leg loop padding would probably help instead if it has to be fast-adjust)
It's a good product. But Backcountry sent me a defective product.There is no big problem using it, but I don't feel good.1. As shown in the attached photo, I sent the product with cracked plastic surrounding the gear loop.2. I definitely ordered a new product, but the pouch is contaminated as if you sent me a used product.I want to exchange the product, but it's difficult, so I'm just going to use it.
I probably tried more than a dozen of different harnesses. This is definitely the best one!The fit is great, the harness is flexible, shaping around your waist but still very supportive. It is on the light side, quite skinny but still comfortable to wear. I might need to do multi pitch to fully judge this aspect.The gear loop are slightly de-centred, which means that you do not need to fully close it to have the gear loop to perfectly line with your body.There are so many details that makes this harness the best of the bunch. The “wearing” warning, the protective plastic for the loop, the small elastic band to hold the extra comfort material in front of the harness (difficult to explain). The extra howl on the back for your chalk bag.The design is superb. I was ... MoreI probably tried more than a dozen of different harnesses. This is definitely the best one!The fit is great, the harness is flexible, shaping around your waist but still very supportive. It is on the light side, quite skinny but still comfortable to wear. I might need to do multi pitch to fully judge this aspect.The gear loop are slightly de-centred, which means that you do not need to fully close it to have the gear loop to perfectly line with your body.There are so many details that makes this harness the best of the bunch. The “wearing” warning, the protective plastic for the loop, the small elastic band to hold the extra comfort material in front of the harness (difficult to explain). The extra howl on the back for your chalk bag.The design is superb. I was looking for something unusual, and this is definitely a “sexy” harness!Just don’t fully trust the size guide. I had to downside to have a good fit.To sun up, it’s a sport climbing harness that might suit many new trad climbers with the 5 small gear loop.
As the title says, this harness is EXTREMELY comfortable. All it took was two minutes of adjusting the leg loops and now when I fall it doesn’t scrape against my legs like the rental harnesses at my gym do. I’ve only used rentals and this one, but it also feels light.
I love this harness. It’s a huge upgrade in my opinion from my black diamond solution harness. The solution feels super stiff compared to this harness, even with my solution being 2 years old. The front gear loops on this do a great job keeping QuickDraws in a nice front loaded position. My only two complaints are with the tie in loops, and leg adjustment buckles. The tie in loops are really small, and with my PAS and rope attached, it’s pretty crowded. The leg adjustment buckles are difficult to manipulate so I try not to adjust them if I can help it.
This waistband is more comfortable than all of my other harnesses, but the leg loops can ride up at times. The colour is beautiful, and it really is a breathable design.I only wished I got a medium instead of a large. The sizing chart might be off because my measurements should be for the large. However, it may be due to the stretchiness of the harness.Overall, this is a solid harness with vibrant colours and extra comfort. I use the front loops for my heavy gear. The back loops seem less strong than the orange loops, but they have also been able to carry a number of gear!
| Weighting Feel | Ultra Lightweight |
| Durability | Durable |
