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The Mountain Hardwear Integral Zip Top is built specifically for intense mountain activity in cool temps. A hybrid of merino wool and polyester fibers creates an ideal fabric for insulation, breathability, and quick-drying performance. Wicked Taper Mesh panels at the underarms lets perspiration evaporate away before it ever has the chance to bog you down. Mountain Hardwear even placed its flatlock seams away from pressure points and abrasion areas, so you'll never feel a seam digging into your shoulder under a backpack strap. When you want to boost ventilation on a long uphill skin or the seventh pitch of your climb, just open the deep front zipper and bask in cooling airflow.

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Mountain Hardwear Integral Zip Top - Long-Sleeve - Men's

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Here's what others have to say...

4 5

Run or hike

A breathable shirt that works well as a stand alone for mild weather jogging or hiking. Provides great sun cover, the low zipper adds good ventilation when needed and the thumb holes are durable without chafing or cutting off circulation. Size L fits my 6' 2" height comfortably. Function and comfort, I plan on getting another.

Run or hike
4 5

Slayer layer

Simple thin layer for aerobic activity in cooler to cold temps.

5 5


This is a very versatile, great piece of clothing. I am 6'2" 185 and got a large and it fits me perfectly. It doesn't fit tight like an Under Armor and the mesh panels on the side are great for breathing and flexibility. The thumbs holes are a nice touch. I plan on taking this to Kilimanjaro to use as a layer and at night closer to the summit if it gets a little chilly in the sleeping bag.

5 5

Super functional

Thumb holes and the zippered color makes this top super functional

5 5

Mountain Hardwear Integral Zip Top

Great gear for any sport, keeps the core warmer then synthetics. Fit is tight if your in-between sizes, go with the larger size. If you find it inexpensive buy it, paying full retail price is always LAME!!!

5 5

Love it

I love this piece, form fitting, thumb holes are help greatly for warmth, and then when not un use are not in the way. Can use as the only base layer or second layer. Use it for everything, layering at work. Acrobatics, hiking, kayaking. zipper is simple and doesn't pinch the neck.

2 5

Too thin. Runs big.

The looks of this shirt are nice. I've always liked zip tee's for being able to regulate temperature on the go. But I run
cold and was looking for a thick baselayer for skiing. This is very very thin. Also, MH usually runs a bit small for me where I usually find (chest 36; 150 lbs) small's work best, I always go medium with MH. Not this one. The medium is going back for being too loose and much to thin for the price. Nice colors though.

5 5


i have the non zip version of this shirt. i have used it climbing, biking, kayaking, backpacking. Its my favorite baselayer by far. Im 6' tall 135-140lb and the small fits perfectly, very snug but not overly, and amazingly warm for how light/thin it is. ***side note the colors are a bit more vibrant than this picture shows***

Is this a tight fitting shirt (like an...

Is this a tight fitting shirt (like an UnderArmour ColdGear) or looser fitting?

Trying to decide between a Medium or Large (5'10", a THIN 155lbs).

In any UA compression gear I wear a Large. Anything loose fitting of theirs I wear a Medium.

Responded on

It's sort of between a loose and a tight fit. It is meant to hug the body, but it certainly does not grab you like UnderArmour does.

4 5

Warm and light base layer

This base layer is amazingly warm for it's weight, nothing like merino wool. The shirt is very comfortable and serves its purpose beautifully. The only reason i didn't give it five stars is because the zipper on the collar can be a bit uncomfortable on the neck untill you get use to it. Tested on the slopes and in blizzards.

What are the washing instructions?

What are the washing instructions?

Responded on

Lisa. "Machine Wash Cold. Gentle cycle. Wash Inside Out with like colors. Do not bleach. Dry Flat. Do not Wring or Twist. Re-Shape. Do Not Iron. Do Not Use Fabric Softener. Do Not Dry Clean."

Taken from this inside of my own Intergral Baselayer. I hope this info helps!