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Arc'teryx: The Ultimate Outdoor Gear

Arc'teryx Atom Jacket - Men's

$340.00
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Size chart

Arc’teryx Size Chart

Use this guide to match your body measurements with Arc’teryx men’s and women’s sizing. Measurements are listed in centimetres.

Arc’teryx sizing is based on body measurements. Product fit may vary by style, activity, fabric, and layering system. If your measurements fall between sizes, choose the larger size for a looser fit or the smaller size for a tighter fit.

Men’s Arc’teryx Size Chart

Men’s Jacket and Shirt Sizing

Size Sleeve Chest Waist Hip
XXS 78 84 69 83
XS 81 89 74 88
S 83 94 79 93
M 86 102 86 100
L 89 109 94 108
XL 91 119 104 118
XXL 94 129 114 128
3XL 96 139 124 138
Men’s fit has been updated. Medium remains unchanged. Smaller sizes fit tighter and larger sizes fit looser.

Men’s Pants and Shorts, Alpha Sizing

Size Waist Hip Regular Inseam Short Inseam Tall Inseam
XXS 69 83 78 73 86
XS 74 88 79 74 87
S 79 93 80 75 87
M 86 100 81 76 89
L 94 108 82 77 90
XL 104 118 83 78 91
XXL 114 128 83 78 91
XXXL 124 138 - - -

Men’s Pants and Shorts, Numerical Sizing

Size Waist Hip Regular Inseam Short Inseam Tall Inseam
28 76 90 79 74 87
29 79 93 80 75 87
30 81 95 80 75 88
31 84 98 81 76 88
32 86 100 81 76 89
33 89 103 81 76 89
34 91 105 82 77 89
36 96 110 83 78 90
38 101 115 83 78 91

How to Measure, Men’s

Sleeve Measure from the centre back neck, across the shoulder, to the elbow, then down to the wrist.
Chest Measure under your arms around the fullest part of your chest.
Waist Measure around the narrowest part of your waist.
Hip and Inseam Measure around the widest part of your hips. For inseam, measure from the crotch down the inside leg to the floor.

Women’s Arc’teryx Size Chart

Women’s Jacket and Shirt Sizing

Size Sleeve Chest / Bust Waist Hip
XXS 72 76 60 84
XS 75 81 65 89
S 77 86 70 94
M 80 91 75 99
L 81 99 83 107
XL 83 109 93 117
XXL 85 119 103 127

Women’s Pants and Shorts, Alpha Sizing

Size Waist Hip Regular Inseam Short Inseam Tall Inseam
XXS 60 84 78 73 85
XS 65 89 78 73 86
S 70 94 79 74 87
M 75 99 80 75 87
L 83 107 80 75 88
XL 93 117 81 76 89
XXL 103 127 81 76 89

Women’s Pants and Shorts, Numerical Sizing

Size Waist Hip Regular Inseam Short Inseam Tall Inseam
00 61 85 78 73 85
0 64 88 78 73 86
2 67 91 79 74 86
4 70 94 79 74 87
6 73 97 79 74 87
8 76 100 80 75 87
10 79 103 80 75 88
12 84 108 81 76 88
14 89 113 81 76 89
16 94 118 81 76 89

How to Measure, Women’s

Sleeve Measure from the centre back neck, across the shoulder, to the elbow, then down to the wrist.
Chest / Bust Measure under your arms around the fullest part of your chest or bust.
Waist Measure around the narrowest part of your waist.
Hip and Inseam Measure around the widest part of your hips. For inseam, measure from the crotch down the inside leg to the floor.
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The Arc'teryx Atom Jacket is a versatile synthetic insulated layer built for hiking, climbing, skiing, travel, and everyday wear. Combining lightweight warmth, breathable comfort, and weather-resistant performance, it is the jacket you can rely on across changing conditions and multiple seasons. The hoodless design layers easily under a shell while maintaining a clean, streamlined look for daily use.

Insulated with Coreloft™ synthetic insulation, the Atom Jacket retains warmth even in damp conditions, making it an excellent alternative to down for high-output activities. Whether you're tackling a cool morning hike, spending time at the crag, or layering up for a winter tour, it delivers dependable comfort without excess weight.

The durable outer fabric provides wind resistance and light weather protection, while stretch side panels improve ventilation and freedom of movement. Articulated patterning enhances mobility, allowing unrestricted performance during active pursuits. An updated FC0 DWR finish helps repel moisture while reducing environmental impact.

Designed for year-round versatility, the Atom Jacket performs as a standalone outer layer in cool weather or as an insulating midlayer beneath a waterproof shell when conditions become more severe. Its balance of warmth, breathability, and packability has made it one of Arc'teryx's most trusted insulated jackets.

Features

  • Lightweight synthetic insulated jacket
  • Coreloft™ insulation provides warmth even when wet
  • Breathable construction for active pursuits
  • Wind-resistant outer fabric with light weather protection
  • Stretch side panels improve ventilation and mobility
  • Articulated patterning for unrestricted movement
  • FC0 DWR finish helps repel light moisture
  • Zippered hand pockets for secure storage
  • Ideal for hiking, climbing, skiing, travel, and everyday wear
  • Fair Trade Certified™ manufactured

Specifications

Fit Fitted
Activity Hiking, Climbing, Ski Touring, Travel, Everyday Use
Insulation Coreloft™ Synthetic Insulation
Weather Protection Wind Resistant with FC0 DWR Finish
Construction Breathable Stretch Side Panels
Layering Standalone Jacket or Midlayer

Why You'll Love It

The Atom Jacket delivers the warmth of an insulated layer, the breathability needed for movement, and the versatility to handle everything from mountain adventures to everyday commutes. Its lightweight construction and dependable performance make it a staple piece in any outdoor layering system.

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