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Arc'teryx FL 365 Harness
  • Arc'teryx FL 365 Harness
  • Arc'teryx FL 365 Harness
  • Arc'teryx FL 365 Harness
  • Arc'teryx FL 365 Harness
  • Arc'teryx FL 365 Harness
  • Arc'teryx FL 365 Harness
  • Arc'teryx FL 365 Harness
  • Arc'teryx FL 365 Harness

FL 365



My vote: None ( 5.9 avg )


Rock, ice or alpine climbing, the FL-365 can cover all three disciplines with enough racking options to take on nearly any route. Created for lightweight versatility and performance comfort, the FL-365 utilizes Warp Strength Technology™ for exceptional weight distribution with dependable strength. Improved tie-in points with orange wear indicators help elevate safety, and the careful patterning and Burly™ Double Weave stretch material for the rest of the harness highlight the Arc’teryx commitment to the relentless pursuit or quality and performance.

Warp Strength Technology™ Advantage: WST™ differs from traditional harness construction in that the load is evenly distributed across the entire width of the harness structure rather than loading a single, narrow strip of webbing in the centre or running edge binding, both of which tend to concentrate the pressure of the harness making them less comfortable. Warp Strength Technology™ cradles the body and the load is universally dispersed from edge to edge. This construction method provides a high degree of support and this new generation of harnesses are more comfortable over time and usage than ever before. The waistbelt and leg loops now include thin reinforcements that help keep the load distributed more evenly across their width and the edges have been softened for a smoother transition. All resulting in a WST™ harnesses that are durable, ultra compact, comfortably supple and light weight.

Retail price

US$ 145.00

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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.

365 g

Gender Men
Sizes XS, S, M, L, XL
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.”

4 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 None (it stretches)
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.

Yes ­
Certification ­
Size Chart

Waist : 66-74 cm / 26-29.1 in
Legs : 47-52 cm / 18.5-20.5 in
Waist : 72-79 cm / 28.3-31.1 in
Legs : 51-55 cm / 20-21.7 in
Waist : 78-86 cm / 30.7-33.9 in
Legs : 54-59 cm / 21.2-23.2 in
Waist : 86-96 cm / 33.9-37.8 in
Legs : 59-65 cm / 23.2-25.6 in
Waist : 97-106 cm / 38.2-41.7 in
Legs : 62-69 cm / 24.4-27.2 in
(we converted centimeters to inches)

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( 5 avg )
( 5 avg )

Compact burrito harness

low profile
packs small
minimal padding
not great for hanging belays
I’ve used it a ton

super light and packable, but not great for hanging belays. It cuts into my hips and my leg went numb on a full hanging belay.

super light and packable, but not great for hanging belays. It cuts into my hips and my leg went numb on a full hanging belay.

( 5 avg )

Burrito Harness is Ultra Packable

ultra packable
great for sport and gym
fixed leg loops
not the most comfortable on hanging belays
no full strength haul loop
I’ve used it a bunch

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!

Outdoor Gear Lab Gear Review rating 4/5

The Arc'teryx FL-365 is designed to be "Fast and Light," with fixed elastic leg loops to cut down on weight and bulk. It is one of the most versatile harnesses you can buy, but comes at a pretty high price compared to the competition.

Blister Gear Review no rating given just a review

The FL-365 packs a lot of great features and comfort into a somewhat lightweight package, but all that comes at the price. A price only equaled by a handful of other harnesses out there. If you climb a lot, spend a lot of time in your harness, and need the level of racking storage the the FL-356 provides for trad, aid, or ice, I’d say it’s worth the price. However, you could buy a sixer of nice draws and a brand new harness for the same coin. Or lunch and a day of skiing at Whistler. Or gas to drive nine hours to Seattle, roundtrip. Your call.

Evening Sends Gear Review no rating given just a review

The new Arc’teryx FL-365 (FL = “fast and light”) has completely solved that one little nagging problem. With four gear loops, great durability, a compact lightweight form factor that packs down really well, and supreme comfort, the FL-365 might just be the perfect all-around harness. Whether you’re doing trad, sport or alpine climbing, I have a hard time coming up with a good reason as to why you wouldn’t want to wear this rig.

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.