Mammut Masao Light HS Hooded Waterproof Jacket

DryTechnology Performance 3 Layer Stretch / 20,000 HH / 24,300 g/m2/24h
Weighs 238g (Medium size)
Code: AW19386
  • Now £212.99
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Mammut's Masao Light HS Hooded Waterproof Jacket is a light, breathable and surprisingly packable hard shell with a decent feature set.

Mammut says:

Reach for the Masao Light HS Hooded Jacket when you hear the call of the mountains. The jacket’s waterproof outer material is complemented by waterproof zippers and a helmet-compatible hood to protect you from adverse weather. This hard shell jacket also features pre-shaped sleeves and hems that can be adjusted for an individual fit. The jacket impresses with its very small packing volume. It comes with a handy stow bag to allow you to carry it in your backpack in case of need. Pockets that you can reach even when wearing a climbing harness add the perfect finishing touch to your alpine experience.

Mammut's Masao Light HS Hooded Waterproof Jacket is a very functional hard shell with decent breathability and a low weight. The jacket doesn't have the clammy feel on the skin you get with some hard shells. Pit zips aid venting when working hard.

The pockets are positioned so you can use them when wearing a harness and and the zips are water resistant. A flaw is the tiny zip pullers which would be very hard to use with gloves. The cuffs are half elasticated to give a good fit. There is adjustment on the hem.The peaked hood can easily accommodate a helmet and 1 simple drawcord adjuster can cinch the hood to size.

A nice touch is the supplied stow bag with clip in point so jacket can packed away tidily when not in use.

- Reviewed by Ultralight Outdoor Gear

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Help and advice:
Advice on choosing a waterproof shell at Ultralight Outdoor Gear
  Hydrostatic Head explained at Ultralight Outdoor Gear
  MVTR & Breathability explained at Ultralight Outdoor Gear
  • With PFC-free DWR treatment 
  • Tailored, adjustable, helmet-compatible hood 
  • Reinforced hood peak 
  • Underarm zipper for optimum ventilation 
  • Waterproof Aquaguard front zipper 
  • 2 climbing harness-compatible front pockets with waterproof zippers 
  • Pre-shaped sleeves 
  • Slightly asymmetric cuffs, elastic on the inside 
  • Hem width can be adjusted with drawstring 
  • Additional stow bag for low packing volume
  • Small weighs: 232g
  • Medium weighs: 238g
  • Large weighs: 240g
  • XLarge weighs: 260g
  • Cut: Athletic fit


  • Water column: 20,000 mm 
  • Vapor permeability: 24,300 g/m²/24h
  • Main Material - Backing: 100% Polyamide
  • Main Material - Face: 100% Polyamide
  • Main Material - Membrane: 100% Polyurethane
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