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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.
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Weight (g) WeightIn 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 |
| Fit | Men |
| Sizes | XS, S, M, L, XL |
Gear LoopsNumber of Gear LoopsGear loops are used to hold gear (quickdraws, cams, etc) onto your harness. 4 gear loops is most common. 
0 - 1 Gear LoopsMost often on full body harnesses or guide/gym style harnesses. 2-3 Gear LoopsMostly found on lighter harnesses made for [ski] mountaineering or high-end sport climbing where weight is a high priority. 4 - 5 Gear LoopsThe standard/most common number for climbing harnesses. Perfect for sport and trad. More Than 6 Gear LoopsDesigned for long multi-pitch and big wall climbing, found on harnesses made to hold the maximum amount of gear. Worth ConsideringOccasionally, 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.” | 5 Gear loops |
Ice Clip SlotsIce Clip SlotIce 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 LoopHaul LoopTrad 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. | No |
| Certification | |
| Size Chart | XS |
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.
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.
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.
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