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  • Patagonia - Nano Puff Pant - Men's - Forge Grey

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  • Patagonia - Nano Puff Pant - Men's - Forge Grey

Patagonia Nano Puff Pant - Men's


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    • Forge Grey

    13 Reviews


    Built to Last.

    Long days wading in frigid waters chasing wild steelies requires an extra layer to keep you in pursuit of those elusive sea-run rainbows. The Patagonia Men's Nano Puff Pants are specifically designed to keep your legs warm even when wet, making them ideal as a mid-layer beneath your waders. The low-bulk 60-gram PrimaLoft insulation provides warmth without making you waddle while you wade. A DWR finish resists light moisture, and a reinforced seat means you won't hear that dreaded tear when you bend down to let your catch loose. 

    • Polyester shell with DWR finish
    • Reinforced taslan seat
    • 60g PrimaLoft Silver insulation
    • Button front with zippered fly
    • Hand pockets
    • Item #PAT00M7

    Tech Specs

    [shell] polyester, [seat] nylon taslan
    PrimaLoft Silver
    Fill Weight
    60 g
    2 front
    Side Zips
    Claimed Weight
    11.7 oz
    Recommended Use
    fly fishing
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

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    awesome cold weather pants

    • Familiarity: I've put it through the wringer
    • Size Bought: xs
    • Height: 5'6"
    • Weight: 120lbs

    I bought these pants for cold weather steelhead fishing, but I've used them this winter in NW Montana for skiing in sub zero temps and walking the dog in near zero temps. They are easy to put on and get off and provide great warmth. I am a female - 5'6", 120 lbs. and bought the xs. Could maybe have gone up a size, but they might have been a bit large even with layers. I have worn the pants with two mid-weight bottoms and have been quite comfortable so . . . sizing is anyone's guess. My husband tried the large - 5'10", 175 lbs - WAY too large, then ordered the medium, and they were too snug for layering. I absolutely LOVE these pants and wish my husband could have found an acceptable fit.

    Warm for Year-round Fly Fishing

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size
    • Size Bought: Medium
    • Height: 5'11"
    • Weight: 160lbs

    I bought these as a gift for my Fiance and this is what he said, "I used these over smart wool leggings under my waders while fishing in December. While they don’t make nano puff socks (yet) my feet were cold at times during the day on the river, but my legs wear warm the entire time. No issue with mobility. Pants even have pockets with is makes them great as an outer layer as well. "


    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: small
    • Height: 5'7"
    • Weight: 145lbs

    great insulators. pair with the jacket for a wearable sleeping bag. material does rip if snagged, but it patches well with gore-tex repair kit.

    i keep these in my pack in case of an emergency on backcountry splitboard missions. also great by the campfire during cooler spring/fall trips.

    typically wear a 31 waist, the small fits nicely but snug after a big meal. waistband has comfortable elastic too.

    Ultimate Loungewear

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Small
    • Height: 5'9"
    • Weight: 150lbs

    Bought these as a baselayer for snowboarding on those extra chilly days and they are awesome! Warm, light, and comfortable. Honestly, I keep my house pretty cold in the winter and I've been lounging around in them as well - so sweet! As a fan of Patagonia, I am not disappointed. Another great piece in my collection.

    oh so warm!

    • Familiarity: I gave it as a gift but have feedback to share
    • Fit: True to size

    I got these pants for my dad and he is glad I did. He uses them primarily as a layer under his fishing waders. He fishes pretty often in the winter and cant ever seem to stay warm! He claims these pants have solved all his woes and he stayed toasty warm! The pants fit true to size. he wears a 30 size pant and the size small fit him perfectly.

    want to love them but . ..

    • Familiarity: I've used it once or twice and have initial impressions
    • Size Bought: s
    • Height: 5'8"
    • Weight: 117lbs

    Have the originals, from ?14 years ago: real down, full length side zips, ankle cuffs. Love those, still wear them 'all the time.' They are pretty beat but warmer than this new version; easier to put on /take off; softer. And black. SO disappointed. Patagonia, please redesign these back towards your original. And please make womens!

    Great Insulated Pants

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size

    Simply a necessity if you plan on camping in very cold weather. Great warmth, nice look, good functionality (pockets are big enough), and easy to pack.


    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size
    • Size Bought: Large
    • Height: 5'9"
    • Weight: 175lbs

    Ok, these pants are everything you thought they would be.

    I live in Florida and I still bought them. I was able to justify buying them somehow and i'm so glad I did. I travel as often as I can and these will go with me on all future travels. On the plane they feel like your wearing a minimal sleeping bag, especially if you pair it with a Nano Puff hoodie that you can sleep the whole flight away.
    These made my wife extremely jealous, she will probably try to steal them every chance she can. I'm not sure why Patagonia hasn't made a women's version yet, there's certainly enough demand for them.
    Also I would love another color. I would definitely buy a second or third pair in another color if there were some available in the future.

    Size, fit, and finish was good and am very happy with these!

    Sleeping bag for your legs.

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: M
    • Height: 5'10"
    • Weight: 170lbs

    The Patagonia Nano Puff pants are a great insulated pant. They are light, comfortable, pack down small, and have a reenforced seat. Two jean style front pockets, and one zippered back. Great yurt pants, or just for those bitterly cold days.

    Are these real life?

    • Familiarity: I've used it once or twice and have initial impressions

    I recently tried these on for fun.
    My body is not built for men's clothing at all so I'm just counting down the days until they make these for women.
    They feel exactly like the nano-puff jacket but for your legs. SUPER warm, very light, would be really great for packing.

    PATAGONIA, please hurry and get me these in womens.

    Light and warm

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size
    • Size Bought: L
    • Height: 6'3"
    • Weight: 185lbs

    I like the deep front and the zippered back pockets. Great warmth/weight ratio. Saved the day when my heater broke.