Arcteryx Men's Atom LT Pant

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Product Description Item No.   10252309

The Arc'teryx Men's Atom LT Pant is an insulated pant for warmth on cold weather alpine trips. The trim fit of the Atom LT pants wraps your lower half with Coreloft 60 insulation, trapping air efficiently while remaining lightweight, compressible, and hydrophobic. The outer nylon fabric is 20D mechanical stretch nylon rip stop for abrasion resistance, remains lightweight and provides wind resistance. The pant can be compressed small into your pack until you arrive at camp and need extra insulation during low-activity, or used as an additional outer layer when the cold really kicks up along the trail. The full length side zippers make it easy to pull on or off without removing your boots, saving time and precious warmth. Your legs will be so pumped about this purchase as them temps fall further with altitude and darkness.

FEATURES of the Arcteryx Men's Atom LT Pant

  • Light, soft face fabric has DWR finish to repel moisture and good air permeability for active use
  • Warm and resilient synthetic Coreloft insulation
  • Fully articulated knees and seat for optimal range of motion
  • Fully separating side zippers with laminated windflap allow for easy removal over boots and crampons
  • Stuffs into its own hanging pocket for easy storage
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Articulated knees and seat
  • Adjustable pant cuff drawcord
  • Internal stow pocket with attachment point
  • - + Product Specifications
    Insulation Details: Coreloft 60
    Weight: 11.6 oz
    Disclaimer: We only ship this brand to US Addresses.
    Pant Rise: Mid
    Gender: Mens
    Features: Insulated, Packable, Windproof
    Best Use: Skiing, Snowboarding, Basecamp and Expedition, Mountaineering and Alpine, Snowsports

    Men's Jackets, Shirts and Tops
    SIZE X-Small Small Medium Large X-Large XX-Large
    Chest 36" 38" 40" 43" 46" 50"
    Waist 29" 31" 33" 36" 39" 43"
    Hip 36" 38" 40" 43" 46" 50"
    Sleeve Length 32" 33" 34" 35" 36" 37"
    Numeric Size 36 38 40 43 46 50

    • Arc'teryx recommends you calculate your body measurements using the info in the Measurement Guide below before selecting a product size. The measurements provided in their size guides refer to your body measurements unless otherwise specified.

    • Check the fit type in the product FEATURES and SPECIFICATIONS and refer to the Fit Guide below to ensure you are ordering a product for the correct end use.

    Men's Pants
    SIZE X-Small Small Medium Large X-Large XX-Large
    Waist 29" 31" 33" 36" 39" 43"
    Hip 36" 38" 40" 43" 46" 50"
    Length (Short) Subtract 2"
    Length (Regular) 30 1/2" 31 1/8" 32 3/8"
    Length (Long / Tall) Add 3"

    • Please note that the actual pant length may vary slightly from the info above, depending on the intended end use of the product.

    Men's Numeric Pant Sizing
    SIZE 28 30 32 34 36 38
    Waist 28" 30" 32" 34" 36" 38"
    Hip 35" 37" 39" 41" 43" 45"
    Inseam 32" 33" 34" 35"

    • Several models of Arc'teryx pants are sized numerically and available in different inseam lengths. You will see these sizes reflected in the options in the Select a Size drop down menu for particular products.

    • For all other pants available in numerical waist sizes where the inseam length is not specified, the inseam lengths provided above apply.

    SIZE Small / Medium Large / X-Large
    Head Circumference 21.7 - 22.4" 22.8 - 23.6"
    Men's Gloves
    SIZE 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 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8" 8 - 8.2"
    Unisex Gloves
    SIZE X-Small Small Medium Large X-Large
    Hand Width 7.3 - 7.6" 7.8 - 8.1" 8.2 - 8.6" 8.6 - 8.9" 8.9 - 9.3"
    Hand Length 7 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8" 8 - 8.2"


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

    Waist - Measure around the natural waist, which is often the narrowest part of your waist.

    Hip - Measure around your hips at the widest part.

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

    Inseam / Pant Length - From a standing position, measure from your crotch to your ankle.

    Head Circumference - Measure the full circumference around the widest part of your head.

    Hand Length - Measure from the tip of your middle finger to the base of the palm.

    Hand Width - Measure the circumference of your hand around the knuckles, excluding the thumb.

    • Please note that all the info provided above refers to body measurements, and NOT the dimensions of the garment.


    Next to Skin Fit - These snugly-fitting garments are made with stretch fabrics to fit next to the skin to enhance moisture management and thermal efficiency. Garments in this fit category when constructed using Arc'teryx's heavier-weight AR and SV fabrics also perform very well as mid layer pieces, and users should consider selecting a larger size to accommodate a base layer underneath if the intention is to use this layering system as a mid layer option.

    Trim Fit - Trim-fitted garments share the motion-friendly traits with Arc'teryx "Athletic" fit garments, but are patterned with lower volume for reduced bulk. These close-fitting pieces layer well under other garments.

    Athletic Fit - This is the "Arc'teryx Standard" fit. These complete patterns utilize anatomical shaping and gussets to enhance motion by minimizing excess bulk. Easy layering under or over each item extends seasonal versatility and comfort.

    Relaxed Fit - Relaxed fit garments rely on higher volume patterns and a reduced amount of articulation to offer roomy mobility.

    Expedition Fit - Cut roomier than the Arc'teryx Athletic fit and suitable for winter/extreme conditions, Expedition (XPD) fit garments are cut larger to accommodate multiple layers without binding or restricting movement.

    • You can find the fit type and additional fit info for Arc'teryx styles in the product description FEATURES and SPECIFICATIONS.

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