Marmot Men's Reactor Pant

Marmot Men's Reactor Pant is rated 4.7143 out of 5 by 7.
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Product Description Item No.   10018055

The Men's Reactor Pant by Marmot. For the ultimate in lounging, or for a truly cozy mid-layer, the Reactor fleece pant is the pinnacle of comfort.

FEATURES of the Marmot Men's Reactor Pant

  • Polartec Classic 100 Micro
  • Back Zip Pocket
  • Elastic Draw Cord Waist

- + Product Specifications
Clothing Fabric: Polyester
Fit Type: Regular Fit
Fabric Weight: 4.6 oz / Square Yard
Fabric Details: 100% Polyester Micro Fleece
Best Use: Casual, Fitness
Weight: 10 oz
Product Technology: Polartec Classic
Clothing Features: Packable
Polartec Classic

Polartec Classic
Polartec Classic has a lofted fiber structure that creates thermal air pockets to prevent convective heat loss and regulate core warmth. It works great with a layering system or worn alone. Durable, fast-drying, weather resistant, soft to the touch and made of candy. That very last part might not be true.


Men's Outerwear & Clothing
  XS S M L XL XXL XXXL
Chest - 36 - 38" 39 - 41" 42 - 44" 45 - 47" 48 - 50" 51 - 53"
Neck - 14.5 - 15" 15.5 - 16" 16.5 - 17" 17.5 - 18" 18.5 - 19" 19.5 - 20"
Sleeve - 32 - 33" 34 - 35" 35 - 36" 36 - 37" 37 - 38"
Waist * - 28 - 30" 31 - 33" 34 - 36" 37 - 39" 40 - 43" 44 - 46"
Hip - 38 - 40" 40 - 42" 43 - 45" 46 - 48" 49 - 51" 52 - 54"
Inseam ** 31" 32" 32.5" 33.5"

* Trail-to-Town pants have specific waist sizes.

** Inseam lengths above are average size lengths. Some pants are available in additional inseam lengths and will display on the product page.

Men's Gloves
XS S M L XL XXL
6.5 - 7" 7 - 7.5" 8 - 8.5" 9 - 9.5" 10 - 10.5" 11 - 11.5"

* To find your Marmot glove size, use a flexible measuring tape and measure your hand around and over the knuckles with your fingers together, excluding your thumb.

Men's Tops Fit Guide
Athletic Semi-Fit Regular Relaxed

Tailored shoulder and fitted hem

Relaxed shoulder and tapered hem

Relaxed shoulder and straight hem

Dropped shoulder and loose hem

Men's Bottoms Fit Guide
Athletic Semi-Fit Regular Relaxed

Fitted at waist, fitted thru knees, and fitted cuff opening

Fitted at waist, tapers at knees, and straight cuff opening

Relaxed at waist, slight taper at knees, straight cuff opening

Loose at waist, straight thru knees, straight cuff opening

- +
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Rated 5 out of 5 by from Perfect for living in. I wear these all day everyday. These really are perfect for any situation (except the office I guess). They are pretty lightweight and feel a little more thin than I expected, but they are still warm and incredibly soft. ,,,,All and all the perfect, go to pair of sweatpants. I am wearing them right now (no matter when you are reading this review it is likely this will not be a lie). Did I mention yet that they are comfortable?
Date published: 2011-03-19
Rated 4 out of 5 by from Not your typical fleece pants I thought these fleece pants weren't going to hold much warmth poor insulation, but was I wrong?!?! They worked well in the arctic at -10 F. How cool is that? They are no windstoppers, but they are perfect as an insulation layer. Get a pair and see for yourself.
Date published: 2008-07-05
Rated 5 out of 5 by from My new binky Really really comfortable. Generous cuts without being to bulky and not so tight where I would look like an idiot kickin it around basecamp. I forsee much use for these both on and off the trail.
Date published: 2008-07-21
Rated 5 out of 5 by from Super Comfy These pants are a perfect midlayer. Everything about them is great. The quality is amazing and they are great to even wear around the house. They are super light so they don't take up much room or weight in a pack when going on long trips. I love buying marmot products, they are always made very durable and handle anything that i throw at them. Everyone should own a pair of these pants.
Date published: 2011-07-28
Rated 5 out of 5 by from Putting these on puts a smile on my face These fleece pants are so comfortable I catch myself smiling every time I slip them on. Warm and light weight as well. I also like that they're not super-baggy; other fleece pants can make me look like some giant, pear-shaped lard-ass. Quality fabric and construction, as you would expect from Marmot. Pick up a pair of these, you won't be disappointed.
Date published: 2012-08-07
Rated 5 out of 5 by from You don't know comfy fleece until you've worn these This is the most comfortable pair of fleece pants I ve ever had. Chica freeked on the cost then put them on to run out side one morning and insited on getting her own or keeping mine as ransom. Warm, stylish (enough), and just plain feel nice to wear.
Date published: 2011-03-05
Rated 4 out of 5 by from These pants work and worth the money you spend. I worn these pants for 1 Mt Shasta, and 2 Mt Rainier trips. In 1 of my Rainier trip, I encountered a big storm, these pants helped me stay dry and safe. During the nice dyas, it breathes pretty well too.
Date published: 2012-11-18
  • 2015-06-30T07:47CST
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  • loc_en_US, sid_10018055, STG, sort_relevancy
  • clientName_moosejaw

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