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The Atom LT Hoody is a versatile, high quality lightweight insulated jacket suitable for all outdoor activities. Warm and weather resistant with air permeable side panels, it performs superbly as an outer or midlayer jacket.
The Atom LT Hoody is a versatile, high quality lightweight insulated jacket suitable for all outdoor activities. Warm and weather resistant with air permeable side panels, it performs superbly as an outer or midlayer jacket.
Arcteryx

Arcteryx Womens Atom LT Hoody Muse

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Pre-Launch

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Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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90-day returns period

We hope that you are perfectly happy with your order from Trekitt, but we understand that you may want to return your purchase. We offer a 90 days return period from the date of purchase, and endeavour to process all returns within 48 hours of receipt.

We do not offer a free returns service. Therefore, all customers are responsible for any postage costs when returning any goods (excluding warranty returns).

For your convenience, follow here to the Royal Mail Returns Portal to arrange return postage for your items. This is not a Trekitt operated service.

The Trekitt Returns Policy Includes...
A 90 day return period and the Trekitt 2-year Common Sense Guarantee.

Exemptions
PPE (Facemasks, Climbing Equipment etc. ), Food Goods, Accessory Cord, Socks & Underwear can only be returned if they have not been worn and/or removed from their original packaging with all swing tags still attached. If there is any sign or possibility that the goods have been used, tampered with or contaminated in any way, then we cannot accept a return on the grounds of consumer safety. Zips are typically not covered under a manufacturer's warranty.

The above does not affect the Consumer Contract Regulations. Click here to read more.

Arcteryx Womens Atom LT Hoody Muse

Season:Sale

Brand:Arcteryx

Code:24111-MUS-

What is the Atom LT?

The Atom LT hoody is one of the best insulated jackets available. This fantastic jacket can replace layers of bulky fleece with one lightweight, warm, packable layer. Use it for virtually any outdoor activity, from winter climbing to multi-day treks and everything in between.

What is the Atom LT made of?

Insulation: At the core of Atom you will find 60g/m² of Coreloft Compact insulation, a synthetic insulation that is similar to Primaloft, however, it's been developed by Arc'teryx to be more durable and resistant to compression (hence the 'compact' bit of the name). Not only is it more durable, but the synthetic fibres have also been siliconised to further increase breathability by reducing the fibre's ability to hold onto moisture.

Fabrics: Arc'teryx use their own Tyono 20 fabric throughout the outer of the Atom. The tight weave of the Tyono face fabric allows for very little air permeation which plays an important role — this minuscule amount of air will go un-noticed during activity but will slowly replenish the warm air that's already trapped inside the insulation and will keep you at a comfortable temperature even whilst moving. To improve breathability even further, super-stretchy, air-permeable polyester panels have been added to the side of the jacket. Not only does this improve breathability, but increases comfort and stretchiness during high-output activities. Both of these fabrics feature a durable water repellent coating to allow light rain and snow to bead off the surface. Please note, this does not make the Atom waterproof, we still recommend taking a hardshell in heavy rain. The internal fabric has also been replaced with a more breathable, comfortable and soft variant, taken straight from Arc'teryx's Proton.

What are the features?

The Atom LT features two hand pockets and an internal security pocket, all of which are zipped. The hood is fully adjustable and sits snug to your head, even in strong winds. A stiffened peak adds further protection from light rain and makes the hood feel more substantial. Finally, to seal out the cold, the Atom LT features a hem drawcord and low-profile Jersey knit cuffs that fit comfortably under bulky gloves or additional layers.

How does the Atom LT fit?

The Atom LT fits into Arcteryx's 'trim' fit block, which means it is designed to sit snug to your body with room for a light layer or two underneath but doesn't have lots of excess material that will flap around in the wind. If you're familiar with the Atom prior to 2020, this will feel slimmer and slightly shorter. For reference, the centre back length is 67cm.

Where does the Atom LT fit in the layering system?

The Atom LT is an insulating jacket that works well as a stand-alone jacket on still, chilly days, but can also be layered up under a shell in colder, damp conditions.
  • Trim fit
  • Water and wind-resistant outer face fabric
  • Super breathable side panels
  • Breathable inner fabric from Proton
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Articulated elbows
  • Gusseted underarms
  • Full front zip with wind flap
  • Stretch-knit cuffs
  • Adjustable hem drawcord
  • Drop back hem
  • Internal chest pocket
  • Two hand pockets

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: 320g
Fabric: Tyono 20 - 100% nylon / stretch fleece - 94% polyester, 6% elastane
Insulation: Coreloft Compact 60g/sqm / Dope Permeair 20 - 100% nylon
Centre back length: 67cm
Sizing Information
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Arcteryx Women's Jackets & Tops Sizing Information

Measurements refer to body size, not garment dimensions.

SleeveChestWaistHip
XS29½ "33 "27 "36 "
S30½ "35 "28 ½ "38 "
M31½ "37 "30 ½ "40 "
L32 ½ "40 "34 "43 ½ "
XL33 "44 "38 "47 "
SleeveChestWaistHip
XS76 cm84 cm68 cm92 cm
S78 cm89 cm73 cm97 cm
M81 cm94 cm78 cm102 cm
L82 cm102 cm86 cm110 cm
XL84 cm112 cm96 cm120 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 Women's Legwear - Letter Sizing

If the garment is sized in analphabetical 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 the actual garment

WaistHipShortRegularLong
XS27 "36 "30 ½ "32 ½ "35 ½ "
S28 ½ "38 "30 ½ "32 ½ "35 ½ "
M30 ½ "40 "30 ½ "32 ½ "35 ½ "
L34 "43 ½ "31 ½ "33 ½ "36 ½ "
XL38 "47 "31 ½ "33 ½ "36 ½ "
WaistHipShortRegularLong
XS68 cm92 cm77 cm82 cm89.5 cm
S73 cm97 cm77 cm82 cm89.5 cm
M78 cm102 cm77 cm82 cm89.5 cm
L86 cm110 cm79 cm84 cm91.5 cm
XL96 cm120 cm80 cm85 cm92.5 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 Women's Legwear - Numerical Sizing

If the garment is sized in anumericalformat, 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 the actual garment

US SizeUK SizeWaistHipShortRegularLong
0425 "34 ½ "30 "32 "35 "
2626 ½ "36 "30"32"35 "
4827 ½ "37 "30"32"35 "
61028 ½ "38 "30"32"35 "
81230 "39 ½ "30 "32"35 "
101431 "40 ½ "30 "32"35 "
121633 "42 ½ "30 "32"35 "
141835 "44 ½ "30 "32"35 "
US SizeUK SizeWaistHipShortRegularLong
0464 cm88 cm76 cm81 cm88.5 cm
2667 cm91 cm76 cm81 cm88.5 cm
4870 cm94 cm76 cm81 cm88.5 cm
61073 cm97 cm76 cm81 cm88.5 cm
81276 cm100 cm76 cm81 cm88.5 cm
101479 cm103 cm76 cm81 cm88.5 cm
121684 cm108 cm76 cm81 cm88.5 cm
141889 cm113 cm76 cm81 cm88.5 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 MeasurementShortShort-RegularRegularRegular-TallTall
14"
15"
16"
17"
18"
19"
20"
21"
22"
23"
Bag Size
Your Back MeasurementShortShort-RegularRegularRegular-TallTall
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/MediumLarge/X-Large
Adult Head Circumference21.5" - 22.5"22.8" - 23.6"
Small/MediumLarge/X-Large
Adult Head Circumference55 - 57cm58 - 60cm

Arcteryx Glove Sizing Information

Measurements refer to body size, not garment dimensions

X-SmallSmallMediumLarge
Hand Width6.7 - 6.9"6.9 - 7.2"7.2 - 7.5"7.5 - 7.8"
Hand Length6.5 - 6.7"6.9 - 7.2"7.2 - 7.5"7.5 - 7.8"
X-SmallSmallMediumLarge
Hand Width16.9 - 17.6 cm17.6 - 18.3 cm18.3 - 19.0 cm19.0 - 19.8 cm
Hand Length16.5 - 17.1 cm17.1 - 17.7 cm17.7 - 18.3 cm18.3 - 18.9 cm
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

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