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Mammut MTR71 Base tee trail running shirt review

15:11 14th June 2013 By Andy Wilson

The superlight Mammut baselayer tee is great to slip on for a short, fast breeze round shorter routes. If you need any extra protection, though, you might be reaching for something a bit more substantial.

MTR 71 Base T-Shirt

It’s so lightweight you’re hard;y know you’re wearing it.

We tested the black version of this tee, which is an unusual choice for a light weight summer top. Nevertheless, it is lovely against the skin – silky smooth and very lightweight. However, the super fine gauge knit means the tee drapes and clings a bit, which can be a bit uncomfortable (not to say odd looking) when you are sweat-soaked. The tee wicks well, but not fast enough to prevent the wet-t-shirt look after a particularly tough climb.

The fit is close but not skin tight. It is designed really for skinny-weight fell runners who don’t want to add a gram to their weight for flying up steep sided mountains. This is a race day shirt.

Having battered the tee on many short blasts, a few signs of wear are already beginning to show. A few pulls at the fabric and a bit of bobbling where the waist pack rubs. But it still smells fresh as a daisy. That, despite the other abuse we have given the tee; using it as a next to skin layer on treks and hikes, too. Given its deliciously comfortable feel, its a great base layer that adds no extra weight but a layer of warmth under other layers.

↑ The Good:

  • A lovely ‘silky’ feel next to the skin.
  • Super light weight.


↓ The not-so-good:

  • Black version not ideal in hot sunshine.
  • A little bit clingy, particularly when sweat-soaked.


A lovely light weight tee perfect for short fell runs when every gram really does count. Also ideal if you like the wet-t-shirt look, ahem.

Score: 7/10

The Facts:

What Mammut says about the PULS SS tee: This T-shirt is distinguished by its light weight and high air permeability. It is ideal for hot summer days.

Brand: Mammut

Model: MTR 71 base tee

Price: £45 (available for less online)

Used for: layering, hot weather running

UK Supplier: www.mammut.ch


Weight: 113g

Fabric: VENtech

Sizes Available: SX, S, M, L, XL, XXL

Colours: black, red, green




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