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  • Arc'teryx - FL-365 Harness - Red Beach/Flare
    Arc'teryx - FL-365 Harness - Detail
    Arc'teryx - FL-365 Harness - Detail
    Arc'teryx - FL-365 Harness - Detail
  • Arc'teryx - FL-365 Harness - Detail
    Arc'teryx - FL-365 Harness - Detail
    Arc'teryx - FL-365 Harness - Detail
    Arc'teryx - FL-365 Harness - Detail
Arc'teryx - FL-365 Harness

Arc'teryx FL-365 Harness

41% Off
$84.98 $145.00

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  • Select options
    • Red Beach/Flare, S
      sale $84.98
    • Red Beach/Flare, M
      sale $84.98
    • Red Beach/Flare, L
      sale $84.98
    • Red Beach/Flare, XL
      sale $84.98

    Tech Specs

    Burly Double Weave (50% nylon, 43% polyester, 7% elastane)
    7075-T6 aluminum, single self-locking waist
    Gear Loops:
    Ice Clipper Slots:
    yes, 4
    Haul Loop:
    Chalk Bag Hanger:
    Claimed Weight:
    [M] 12.9 oz
    Recommended Use:
    Manufacturer Warranty:

    The FL stands for Fast and Light.

    You can rely on the Arc'teryx Men's FL-365 Harness for fast and light climbs whether you're on rock, ice, or something mixed in the alpine. Warp Strength Technology separates the webbing inside this versatile harness in order to better balance your weight evenly and offer more comfort without adding heavy padding. Burly Double Weave fabric offers four-way stretch capability, so you can climb as if you aren't wearing a harness at all.

    Arc'teryx equipped the FL-365 Harness with a single self-locking buckle at the waist, and the elasticized leg loops offer a snug fit whether you have ice climbing layer on or you're wearing summer shorts. There are four large gear loops for multiple trad racks, and four slots accommodate ice clippers. This harness also features a stainless steel quick hook at the rear for drop-seat functionality, a rear haul loop, and an extra loop for chalk bags or belay devices.

    • Warp Strength Technology
    • Burly Double Weave four-way stretch fabric
    • Self-locking waist buckle
    • Elasticized fixed leg loops
    • Four gear loops, four ice clipper slots
    • Drop-seat compatibility
    • Rear haul loop
    • Stretch mesh storage bag

    Novice Climber

      I am an extremely novice climber and used this for a group outing. I did not notice the harness at all while climbing and that is a testament to this harness. Any other times i have climbed my harness was extremely uncomfortable.
      I know very little about the equipment but i can tell you 2 things. this was comfortable and i never felt unsafe!

      Thank you Harness Gods

      • Familiarity: I've used it once or twice and have initial impressions

      This harness rocks!! The burley double weave 4-way stretch fabric makes for an unbelievably comfortable climb in the gym, outside or killing it on the ice. It's versatility and light weight make it an easy choice for that go to harness for any type of climbing.
      The fixed leg loops were comfortable and I never felt a need to want to adjust them!
      Overall an amazing harness that covers so many climbing needs! Although it's a hefty price, it's worth every cent. So while you're climbing your local crag and halfway up wonder if you're even wearing a harness, don't stress-you are. It's just so light and awesome it feels like you aren't!

      Fits Like A Glove

      • Familiarity: I've used it several times

      I can't believe that I didn't try this harness sooner! I've normally used Petzl harnesses since the tend to work the best for me, but lately they have been changing their designs/fit. I've been wanting to switch to a harness with leg loops that didn't have buckles, but most of them do not accommodate larger legs. This harness fit just right with my waist/leg combination. I also like that there is some overlap between the sizes, unlike most other manufactures. I was looking for an all around harness that would work for Trad, Ice, and sport/gym climbing. This one has exceeded my standards. It's on the pricier side, but just like rock shoes, there really isn't a price for a perfect fit. The only thing that I noticed so far is the leg loops take a little bit to work in.

      Thanks for the sweet review Nick! Glad you like this harness!

      To clear up any confusion

      • Familiarity: I've put it through the wringer

      So I know Arc'teryx harnesses can sometimes not make sense and a little confusing on which one is best for you, here is a break down video from Arc'teryx to clear everything up:

      Fast and Light For Sure

      • Familiarity: I've put it through the wringer

      Like the description says this is a very light harness. Works well for sport climbing. The plastic around the gear loops is a little funky on mine after being weighted down with a heavy rack, but it is structurally perfect. I would definitely recommend this harness to an avid sport climber.

      The Perfect Harness??!

      • Familiarity: I've put it through the wringer

      Of the three Arc’teryx harnesses I’ve owned throughout the years, this one is by far the most comfortable. I love that it’s compact and low profile on the body. Even though it lacks proper padding, the webbing material disperses the weight well and is comfortable (a relative term) in all situations except for long hanging belays (aren’t all harnesses?).
      I never thought I’d like fixed leg loops, but after owning this harness for a year, I don’t think I can go back. I use this harness for ice, mixed, and sport climbing. I love that this harness has ice clipper loops!
      The GIANT haul loop is great. This saves time and effort while blindly clipping on a second rope on or can function as a 5th gear loop.

      Burrito Harness

      • Familiarity: I've put it through the wringer

      I've had this harness for about a year now and have used it for gym, sport and trad. I love the fixed leg loops, and how packable the harness is. It packs up into a tiny burrito size and is easy to take with me on any approach. It's very low-profile while climbing and doesn't feel like a thick diaper like some harnesses.
      I would wear this harness for anything except hanging belays. While reading reviews, I never read anyone complain about hanging belays, but this harness pinches the outside of my hips and my leg goes numb. Maybe it's just me. I'm currently looking for a burlier harness for hanging belays, sacrificing packability.
      In short: It's sexy, ultra compact and convenient, extremely low profile, and good for all activities besides hanging belays. I'm 5'11, 160 lbs, 31 waist, and I have a size medium harness.
      Extra star because while at the gym someone stole my harness stuff sack (which seriously depressed me because it packs the harness so small) but when I called Arcteryx, they offered to ship me one for free. I'm a stickler for great customer service. Thanks Arcteryx!

      Burrito Harness

      Great review, thanks! Also what climb are you on in that picture?

      Great review, thanks! Also what climb are you on in that picture?

      Amazing harness

        This Harness defies all expectation. You think a harness as light and thin would cut into you. But it doesn't at all it's super comfortable. The webbing is threaded throughout the waist and leg belts. It gives an even weight distribution eliminating cutting. super light and comfortable the sizing is pretty regular and true to size. I would recommend this belt to anyone that wants a packable, light and comfortable belt. This would be fine for a new climber or a seasoned veteran.

        Amazing harness

        Excellent and unbeatable as usual

        • Familiarity: I've used it several times

        Upgraded to this from my 320a which had gotten too large for me. First thing to mention, the sizing system seems to have changed. I had a 320a in LARGE which I had tightened all the way (due to losing weight). Then I first got this in medium but could also tighten it so both ends touched with no leftover webbing. Odd. So I had to move to small.

        Leg loops without buckles are fantastic. The harness is super light, you can just fold it up in your pack and forget about it and you don't even notice yourself wearing it. Kinda wish they still had the little loop/buckle for a chalk bag (since I dont wear belts for it) from the 320a, but a minor thing.

        Comfortable, well made, incredibly thin and light. Looks great. Will continue to always buy arcteryx harnesses!

        The Best

        • Familiarity: I've put it through the wringer

        Out of all the harnesses I have tried on and put through abuse. This one is my favorite. It is simple, lightweight, and compresses down to be stored away very nicely. I have used this for indoor and outdoor, both sport and trad. It is so comfortable that I forget I have it on!

        Forgot I'm wearing it!

        • Familiarity: I've used it several times

        I only have good things to say about this harness! Granted I've only used it in the gym a couple times, sport climbing once and trad climbing once. Maybe I'll update this review later.

        So breaking it down, pros and cons.
        1) comfort is incredible, I upgraded to this from the old black diamond momentum and the difference is astonishing. I attribute the comfort to the width of the waist belt. The only thing more comfortable would be big wall harness (no experience with those, I live in Texas). Bring on the hanging belays. 4/5 stars for comfort.

        2) organization: I was quite content with the black diamond gear loops that stick out to the sides and make clipping/unclipping gear easy. I WAS a little concerned that I wouldn't like the arcteryx gear loop. no concern any longer. once you get a few quick draws/cams/whatever on there they are great. PLUS the 5th gear loop. like a genius, I only put stuff I know I won't use while leading on the 5th rear gear loop (ATC, Prusick, Anchor cordalette) so it's fine. But I will say it's pretty darn hard to get stuff from that loop. Just don't plan on putting your quick draws back there. 5/5 stars for organization.

        3) packability: pretty straight forward. It probably saves enough room (compared to old BD momentum) to fit an additional pair of shoe in my back. It compresses down to about the size of both my fist. 5/5 stars for packability

        4)Function: This is what people talk about when they say "I forgot I was wearing this harness" It just moves with your body and conforms to your hips like a sweet lover (brown-chicken brown-cow). 5/5 stars for function.

        5) style: I think this harness looks pretty boss. The dark green with neon green accents is pimpen. 5/5 stars for style (which is what it's all about right?).


        1) Price: the one and only true downside. One does not simply purchase arcteryx equipment without taking out a second mortgage. the only consolation is I was looking at the BD chaos (which is $125). I HIGHLY recommend spending the extra $20 to get his harness (or just get 2 $60 harness ha).

        2) adjustability: not a cons so much as an observation. If you're not used to fixed gear loops, it takes some getting used to. For reference, I normally wear a size 32 jeans and I measure the circumference of my leg was about 22.5 inches around. I got a size medium and it fits great. Enough room that I can layer up, and I wouldn't want leg loops any tighter. currently they're snug but not tight or pinching by any means.

        Over all I highly recommend this harness for gear junkies like me who feel they need an expensive harness for some reason. but really, it's a very well designed piece of equipment and I'll probably purchase another arcteryx harness when I have to retire this one!

        EDIT: right after I bought this harness, Black Diamond came out with their "solution" harness which appears to be very packable(thin like arcteryx), lightweight, with no 5th gear loop and much smaller gear loops but only half the price (and can probably find on sale sooner or later). While I haven't tried that harness, I can still say this. If you're just sport climbing (don't need a lot of racking space) you might wanna check out that harness. I also have multi pitch trad climbed with BD smaller gear loops and was totally fine.

        With that last part being said, I still give this harness 5 stars (maybe 4.5 considering the price) because it functions SOO well.

        Best harness i've used

        • Familiarity: I've used it several times

        The FL-365 is an awesome harness. Obviously a very expensive harness as well. TIt's an incredibly light weight harness; the tone was set whenever i first tried it on at home and forgot i was wearing it for over an hour.

        For sport climbing and gym sessions, its lightweight comfortable, and can hold more quickdraws than you'd ever need. In spite of the absence of padding I've never found it to be uncomfortable when hangdogging or on long belay duty. I haven't gotten to take it trad or multipitching yet but i image it'll hold up just fine and can pretty easily hold a typical single pitches worth of cams comfortably.

        Durability wise I've had it for a couple of months and so far can't see any signs of wear on it at all; it seems like its going to hold up very nice and I haven't noticed any bunching in the legs loops like have been mentioned with older versions of the AT harnesses.

        All-in-all, its a very good, if very expensive, harness. I suppose its about longevity and quality vs cost but I'm happy with my decision.


        Men's / Unisex Harnesses

        28 - 30in

        (71 - 76cm)

        30 - 32in

        (76 - 81cm)

        32 - 34.5in

        (81 - 88cm)

        35 - 38.5in

        (89 - 98cm)

        39 - 42in

        (99 - 107cm)


        20.5 - 22in

        (52 - 56cm)

        21.5 - 23in

        (55 - 59cm)

        23 - 24.5in

        (58 - 62cm)

        24.5 - 26in

        (62 - 66cm)

        26.5 - 28in

        (67 - 71cm)

        Size ranges are guidelines only and will vary with the type of clothing worn during measurement. Harnesses fit differently on different individuals even when measurements are the same sizes and are based on actual body dimensions.
        Measure around your waist at the narrowest part.
        Measure around your thigh at the fullest point.