Established in 1986 Trekitt is family owned and run. We have always been driven by our passion for wild places and mountains and have enjoyed sharing those experiences with our customers for over 30 years.

Trekitt provides top quality equipment and clothing for mountaineers, hill walkers, climbers and travellers and has grown over the years to cater for a wide range of outdoor activities. We hold large stocks of specialist clothing and equipment from the worlds best brands backed up by our award winning customer service.  We are more than a shop, we are a service for adventure, we fully understand that to get the most from your passion you need the best kit that is fit for purpose and suits you personally.  We offer expert boot and rucksack fitting services in our Hereford shop and are always happy to discuss your equipment needs, so just call us.

The Hereford shop is open Monday to Saturday from 09:00 - 17:30.

We are closed on Sundays and Bank Holidays because we value our free time and want to keep it that way.

51 Eign GateHereford Herefordshire HR4 0AB
Arcteryx

Arcteryx Mens Proton FL Hoody Proteus

Arcteryx Mens Proton FL Hoody Proteus

£171.00 £190.00
10% off

Customer Rewards points earned with this item.

Other colours available:
Arcteryx Mens Proton FL Hoody Firoza
Arcteryx Mens Proton FL Hoody Black
Arcteryx Mens Proton FL Hoody Proteus

The Proton is the perfect balance between air permeability and abrasion and weather resistance - the result is a jacket that helps shield you from the elements but also breathes exceptionally well - even during high output activities.

Description

Season : 2019S

Code : 23101-Pro-

Weight : 0KG

Hover over an icon to view more ...

What is the Proton?

The Proton is the perfect balance between air permeability and abrasion and weather resistance - the result is a jacket that helps shield you from the elements but also breathes exceptionally well and allows air to pass freely in and out - even during high output activities. It particularly excels when you're out climbing, scrambling and on long summer alpine routes. 

What is the Proton made of?

Insulation: The Proton uses Octa Loft insulation throughout the jacket. Octa Loft is a highly breathable synthetic insulation that traps heat whilst simultaneously allowing air to freely pass through it - this gives you a great mid layer for summer alpine routes when you still need protection but you need a jacket that you won't sweat buckets in. Octa Loft also dries quickly if you get caught out with the weather and will still keep you warm if it gets wet.

Outer Fabric: Encasing all of this gorgeous insulation is Fortius Air 20 - a lightweight, abrasion and wind resistant fabric that also allows air to pass freely through it. The combination of this outer fabric with this insulation gives you a versatile jacket that is able to self-regulate, preventing vapour and moisture build-up meaning you can keep it on all day even in a varying range of temperatures and output levels. 

What are the features?

The Proton has a low profile, insulated, adjustable, helmet compatible hood that actually works well under a helmet too. It's generous enough to sit comfortably over a helmet but also cinches right down to sit snug to your head when you don't have a helmet on. The Proton also has two zippered chest pockets and two zippered hand pockets - all of which sit out of the way of the harness line so bits in your pockets don't dig in whilst you're climbing. At the bottom of the jacket you'll find dual hem adjusters to help keep the wind out and HemLocks - these stop the jacket from riding up out of your harness when you're climbing. 

How does the Proton fit?

The Proton fits into Arcteryx's 'Trim Fit' fit block, which means it is designed to sit snug to your body with room for a layer or two underneath but doesn't have lots of excess material that will flap around in the wind.

Where does the Proton fit in the layering system?

The Proton FL is an insulating jacket that works well as a stand-alone jacket on still, mild to chilly days, but can also be layered up under a shell in colder, damp conditions. Due to the fact that the Proton FL is highly air permeable, you will find that you will benefit from putting a wind shell over the top of it if it is blowing a gale.

Summary

The Proton FL is a highly versatile jacket that is able to self-regulate, preventing vapour and moisture build-up meaning you can keep it on all day even in a varying range of temperatures and output levels; it will end up being you go to for all your high output mountain adventure this season!

  • Lightweight
  • Versatile
  • Breathable
  • Air permeable
  • Trim Fit
  • Abrasion and wind resistant
  • Low profile, insulated, adjustable, helmet compatible hood
  • Two zippered chest pockets
  • Two zippered hand warmer pockets
  • Dual tether hem adjusters
  • Hemlock
Care & Advice

How Should Your Insulated Jacket Fit?

Insulated jackets are pedantic little things. Too tight and you'll compress the insulation and limit the warmth capabilities of your brand new jacket, too loose and you'll spend hours warming up the dead space inside the jacket. Getting the correct fit isn't just about aesthetics, it will determine how warm you are. 

The Incorrect Fit

Too loose: A jacket which is too loose will keep you relatively warm, however it will take far longer to do so and will waste large amounts of your precious energy. An insulated jacket works by trapping the natural heat that your body gives off in the fibres of the insulation; this creates a micro-climate inside your jacket, keeping you warm and toasty. If your jacket is too loose, heat will be able to escape through the hem, the sleeves and the neck of the jacket; it's a little like sticking the heating on in your car with the windows cracked open - it will heat up, just incredibly slowly.   

Too tight: A jacket which is too tight is arguably worse than one that is too loose. If your jacket is far too tight, the baffles can compress to a point where the insulation can't loft effectively, limiting the amount of warmth it can trap. Essentially, it won't work! 

The Correct Fit
It's a tricky one to explain, but it's somewhere in the middle. You've first got to consider how many layers you'll tend to wear underneath; will you have just a t-shirt then the jacket, or possibly a baselayer, midlayer and then the jacket? When you've figured out your layers and you've popped your insulated jacket over the top, you shouldn't have any dead space inside. The cuffs and hem should be comfortably sealed around your waist and wrists with room to move. You should be able to lift an arm up above your head without the hem of the jacket lifting more than an inch or so, and the sleeves should be long enough that when carrying out the same motion, they aren't mid-way up your forearm. Your shoulders and chest area should have enough room so that your hands can touch behind your back without feeling restricted. 

Additional Information
Lastly, consider which activites you'll primarily be carrying out while wearing the jacket. Are you primarily using it as a winter climbing piece, or an everyday/dog walking jacket? You'll find that technical climbing jackets tend to feature a shorter cut, while urban and casual jackets feature a longer cut to offer additional warmth with less mobility.

To see examples of what a badly fitting and correctly fitting jacket looks like, click here.

Technical Information

Weight: 340g

Insulation: Octa Loft, 100% Polyester

Outer Fabric: Fortius Air 20

Sizing Information
Swipe for more
  • Jackets & Shirts
  • Legwear (Letter)
  • Legwear (Numerical)
  • Bags
  • Hats
  • Gloves

Arcteryx Men's Jackets & Shirts Sizing Information

Measurements refer to body size, not garment dimensions.

  Chest Waist Hip Sleeve
X-Small 36" 29" 36" 32"
Small 38" 31" 38" 33"
Medium 40" 33" 40" 34"
Large 43" 36" 43" 35"
X-Large 46" 39" 46" 36"
XX-Large 50" 43" 50" 37"
  Chest Waist Hip Sleeve
X-Small 92cm 74cm 92cm 81cm
Small 97cm 79cm 97cm 84cm
Medium 102cm 84cm 102cm 86cm
Large 110cm 94cm 110cm 89cm
X-Large 118cm 99cm 118cm 91cm
XX-Large 128cm 110cm 128cm 94cm

Next to Skin Fit: Cut snug to the body through the entire garment to enhance moisture management and thermal efficiency.

Slim Fit: Cut slim to the body through chest, waist, hip and thigh for a low profile fit.

Regular Fit: Cut comfortably from the body through bust/chest, waist, hip and thigh for a classic fit.

Relaxed Fit: Cut loosely through the waist, hip, and thigh for a casual fit.

1Chest

Measure around your chest/bust, holding the measuring tape under your armpit.

2Waist

Measure around your waist at the narrowest part.

3Inseam

From a standing position, measure from your crotch to your ankle.

4Sleeve

With your arms in a slightly bent position, measure from the centre of the back of your neck, along the length of your arm, to the wrist.

5Hip

Measure around your hips at the widest part.

Arcteryx Men Legwear - Letter Sizing

If the garment is sized in an alphabetical format, please use this size chart. Else if the garment is sized numerically, please refer to the numerical size chart. Sizing refers to your body size, not the size of the product. Pant inseam, length of actual garment.

  Inseam
Size Waist Hip Short Regular Long
XS 29" 36" 30 ½ " 32 ½ " 35 ⅓ "
S 31" 38" 30 ½ " 32 ½ " 35 ⅓ "
M 33" 40" 30 ½ " 32 ½ " 35 ⅓ "
L 36" 43" 31 " 33 " 36 "
XL 39.5" 46.5" 31 ⅛ " 33 ⅛ " 36 ⅛ "
XXL 43" 50" 32 ⅛ " 33 ⅛ " 37 ⅛ "
  Inseam
Size Waist Hip Short Regular Long
XS 74 cm 92 cm 77 cm 82 cm 89.5 cm
S 79 cm 97 cm 77 cm 82 cm 89.5 cm
M 84 cm 102 cm 77 cm 82 cm 89.5 cm
L 92 cm 110 cm 79 cm 84 cm 91.5 cm
XL 100 cm 118 cm 81 cm 86 cm 93.5 cm
XXL 110 cm 128 cm 82 cm 87 cm 94.5 cm

Next to Skin Fit: Cut snug to the body through the entire garment to enhance moisture management and thermal efficiency.

Slim Fit: Cut slim to the body through chest, waist, hip and thigh for a low profile fit.

Regular Fit: Cut comfortably from the body through bust/chest, waist, hip and thigh for a classic fit.

Relaxed Fit: Cut loosely through the waist, hip, and thigh for a casual fit.

1Chest

Measure around your chest/bust, holding the measuring tape under your armpit.

2Waist

Measure around your waist at the narrowest part.

3Inseam

From a standing position, measure from your crotch to your ankle.

4Sleeve

With your arms in a slightly bent position, measure from the centre of the back of your neck, along the length of your arm, to the wrist.

5Hip

Measure around your hips at the widest part.

Arcteryx Men Legwear - Numerical Sizing

If the garment is sized in an numerical format, please use this size chart. Else if the garment is sized alphabetically, please refer to the alphabetical size chart. Sizing refers to your body size, not the size of the product. Pant inseam, length of actual garment

  Inseam
Size Waist Hip Short Regular Long
28 28" 35" 30 " 32 " 35 "
29 29" 36" 30 " 32 " 35 "
30 30" 37" 30 " 32 " 35 "
31 31" 38" 31 " 33 " 36 "
32 32" 39" 31 " 33 " 36 "
33 33" 40" 31 ½ " 33 ½ " 36 ½ "
34 34" 41" 32 " 34 " 37 "
36 36" 43" 33 " 35 " 38 "
38 38" 45" 33 " 35 " 38 "
  Inseam
Size Waist Hip Short Regular Long
28 71 cm 89 cm 76 cm 81 cm 88.5 cm
29 74 cm 92 cm 76 cm 81 cm 88.5 cm
30 76 cm 94 cm 76 cm 81 cm 88.5 cm
31 79 cm 97 cm 79 cm 84 cm 91.5 cm
32 81 cm 99 cm 79 cm 84 cm 91.5 cm
33 84 cm 102 cm 80 cm 85 cm 92.5 cm
34 86 cm 104 cm 81 cm 86 cm 93.5 cm
36 91 cm 109 cm 84 cm 89 cm 96.5 cm
38 96 cm 114 cm 84 cm 89 cm 96.5 cm

Next to Skin Fit: Cut snug to the body through the entire garment to enhance moisture management and thermal efficiency.

Slim Fit: Cut slim to the body through chest, waist, hip and thigh for a low profile fit.

Regular Fit: Cut comfortably from the body through bust/chest, waist, hip and thigh for a classic fit.

Relaxed Fit: Cut loosely through the waist, hip, and thigh for a casual fit.

1Chest

Measure around your chest/bust, holding the measuring tape under your armpit.

2Waist

Measure around your waist at the narrowest part.

3Inseam

From a standing position, measure from your crotch to your ankle.

4Sleeve

With your arms in a slightly bent position, measure from the centre of the back of your neck, along the length of your arm, to the wrist.

5Hip

Measure around your hips at the widest part.

Arcteryx Mens Bag Sizing Information

Sizing refers to your back measurements, not the size of the product.

  Bag Size
Your Back Measurement Short Short-Regular Regular Regular-Tall Tall
14"          
15"          
16"          
17"          
18"          
19"          
20"          
21"          
22"          
23"          
 
  Bag Size
Your Back Measurement Short Short-Regular Regular Regular-Tall Tall
35.5 cm          
38 cm          
40.5 cm          
43 cm          
45.7 cm          
48 cm          
51 cm          
53 cm          
55.5 cm          
58.5 cm          
 
1

Measure along the spine between the 7th cervical vertebra and the level of the hip iliac crest

2

Compare this measurement to the Sizing Charts

3

It is possible to interchange different size shoulder strap and hipbelt components on many Arc'teryx Packs, but this will not change or affect the back-length of the pack.

Arcteryx Hat Sizing Information

Measurements refer to body size, not garment dimensions

  Small/Medium Large/X-Large
Adult Head Circumference 21.5" - 22.5" 22.8" - 23.6"
  Small/Medium Large/X-Large
Adult Head Circumference 55 - 57cm 58 - 60cm

Arcteryx Glove Sizing Information

Measurements refer to body size, not garment dimensions

  X-Small Small Medium Large X-Large
Hand Width 7.6 - 7.9" 7.9 - 8.2" 8.2 - 8.6" 8.6 - 8.9" 8.9 - 9.3"
Hand Length 7.0 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8.0" 8.0 - 8.2"
  X-Small Small Medium Large X-Large
Hand Width 19.2 - 20.0cm 20.0 - 20.9cm 20.9 - 21.8cm 21.8 - 22.6cm 22.6 - 23.5cm
Hand Length 17.8 - 18.4cm 18.4 - 19.0cm 19.0 - 19.6cm 19.6 - 20.2cm 20.2 - 20.8cm
1Width

With your hand open, measure from the tip of your middle finger, down to the crease at the base of your palm

2Length

With your hand open, measure around the circumference of your hand, at the base of your knuckles

 

Reviews
0
0
Write a review

Review This Item

0
As rated by 0 Customers

What do you think of Arcteryx Mens Proton FL Hoody Proteus?

  • Your Forename
  • Your Email
  • How would you rate it?
  • Would You Recomend this product?
  • Yes: No:
  • Let others know your opinion.
  • Submit Review
Coming Soon

This product will be available very soon. Want to be the first to know when it arrives? Simply enter your email address below and we will notify you as soon as the stock is on the system

trig
 

Thanks for choosing this item ...

Arcteryx Mens Proton FL Hoody Proteus

Would you like to see the special offer we have for you?

 

   

The product I bought was competitively priced. The video demonstration of the product assisted me in my decision to purchase the item and was very informative, as it showed all of the features and the fit. I chose "click and collect" which was an efficient and quick process. I would definitely shop here again.

Amanda  •   19 Jan 2019.

Read More Reviews

Need some help?
To improve your shopping experience today and in the future, this site uses cookies.
I Understand