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The Alto Guide HS Hooded Jacket is a durable, reliable hardshell for all mountain pursuits, whether you're scrambling in the Lake District or mountaineering in the Scottish Highlands.
The Alto Guide HS Hooded Jacket is a durable, reliable hardshell for all mountain pursuits, whether you're scrambling in the Lake District or mountaineering in the Scottish Highlands.
Mammut

Mammut Womens Alto Guide HS Hooded Jacket Supernova/Marine

£162.00 £270.00 40% off
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With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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90-day returns period

We hope that you are perfectly happy with your order from Trekitt, but we understand that you may want to return your purchase. We offer a 90 days return period from the date of purchase, and endeavour to process all returns within 48 hours of receipt.

We do not offer a free returns service. Therefore, all customers are responsible for any postage costs when returning any goods (excluding warranty returns).

For your convenience, follow here to the Royal Mail Returns Portal to arrange return postage for your items. This is not a Trekitt operated service.

The Trekitt Returns Policy Includes...
A 90 day return period and the Trekitt 2-year Common Sense Guarantee.

Exemptions
PPE (Facemasks, Climbing Equipment etc. ), Food Goods, Accessory Cord, Socks & Underwear can only be returned if they have not been worn and/or removed from their original packaging with all swing tags still attached. If there is any sign or possibility that the goods have been used, tampered with or contaminated in any way, then we cannot accept a return on the grounds of consumer safety. Zips are typically not covered under a manufacturer's warranty.

The above does not affect the Consumer Contract Regulations. Click here to read more.

Mammut Womens Alto Guide HS Hooded Jacket Supernova/Marine

Season:ZZZ Discontinued

Brand:Mammut

Code:1010-29570-6430

Product Ratings

Waterproof
WaterproofReally Waterproof
Breathability
BreathableUltra Breathable
Weight
LightHeavy
Features
Low Feature SetHigh Feature Set

We find this suitable for

Hiking

Climbing

Mountaineering

What is the Alto Guide HS Hooded Jacket?

It's the perfect hardshell for mountain guides and general outdoor enthusiasts who want to take it up a gear and get stuck into some gnarly adventures. The Alto Guide HS provides fantastic waterproof protection and durability for mountaineering, climbing, and scrambling as well as more leisurely outdoor pursuits.

What is it made of?

This jacket comprises Mammut's very own DRYTechnoloy™ Pro made of 100% polyamide for lightweight durability. Mammut DRYTechnology™ Pro provides windproof and waterproof protection with a minimum Hydrostatic Head of 20,000mm.

The polyamide membrane is based on natural raw materials, earning its bluesign® approved status that ensures it's safe for consumers, the environment and the workers involved in producing it.

Mammut also works with FairWear to ensure safe, ethical working conditions in their factories, helping to protect workers' rights and being considerate and sustainable with their processes.

What are the features?

This jacket has a helmet compatible hood with a reinforced peak to help draw away the rain from your face. The hood also has a three-point adjustment system to optimise the fit around various head shapes and sizes.

Sleeves are pre-shaped and have hook and loop fasteners to adjust the fit around the cuffs, ideal if you're wearing chunky mitts or gloves.

There are water repellent zippers under the arms for ventilation. Each zip has a chunky pull that is easy to grab, so you don't have to completely remove the jacket to undo them, offering a steadier way to dump heat without getting cold too quickly.

The front is also fastened with a water repellent two-way zipper that allows you to undo the zip from the bottom upwards and keep the top together, making climbing harnesses much more accessible.

Speaking of harnesses, the two pockets at the front of the jacket are harness compatible, perfect for storing a route map, GPS device or essential energy gels to keep you fuelled throughout the day.

There's also a chest pocket with a concealed zipper for more valuable items like keys, a mobile phone or some emergency cash.

At the bottom of the jacket, you can adjust the hem with the easy-to-use drawstring adjuster to pull in the material for heat retention or extra weather resistance.

Features:

  • Hem width can be adjusted with drawstring
  • Pre-shaped sleeves with hook and loop fastener
  • Helmet-compatible hood with reinforced peak and 3-point adjustment
  • Robust, water-repellent YKK Vislon® 2-way front zipper
  • 2 climbing harness-compatible front pockets with waterproof zippers
  • Chest pocket with concealed zipper
  • Underarm ventilation with water-repellent zipper
  • Robust, windproof and waterproof 3-layer Mammut DRYtechnology Pro material made from 100 % polyamide
  • Polyamide membrane based on natural raw materials
  • Regular fit
Technical Information

Weight: 417g

Materials: 100% Polyamide 40D

Breathability: 20.000 g/m²/24h


For best performance:

With any new waterproof, we advise you to wash the product with the appropriate tech wash and reapply a fresh DWR to activate the technology and achieve the best performance from day one.

How does waterproof technology work?

Modern waterproof technology often uses a waterproof membrane sandwiched between layers of fabric and a DWR (Durable Water Repellent) on the outer material.

What is 'wetting out', and how does it affect my waterproof?

DWRs commonly get worn down from contact, whether with your backpack or your fingertips. When the DWR wears down, your waterproof product may begin to 'wet out', meaning the water stops beading off the surface and starts to soak in instead.

While the waterproof membrane will prevent the jacket from leaking or water from getting inside, when your jacket wets out, moisture (from sweat or condensation) can build up on the interior, causing it to feel moist.

There's a common misconception that, when this happens, the product is faulty because people believe the waterproof membrane is leaking. However, this is most likely not the case; you simply need to clean your jacket and reapply the DWR.

The easiest way to spot when this is happening is to see if water beads off the material's surface or soaks in.

PFC/PFAS usage in modern waterproof and DWR technology

Most modern DWR technology avoids the use of PFCs/PFAS chemicals.

PFC-free means perfluorinated chemical-free. Companies such as Gore-Tex® are also beginning to eliminate these harmful chemicals in their waterproof membranes with technology like Gore-Tex® ePE.

What are PFC/PFAS chemicals?

Perfluorinated chemicals (PFCs) are also known as forever chemicals and cause environmental harm, similar to PFAS.

PFAS means per- or poly-fluorinated alkyl; these are a group of industrial chemicals that also cause detrimental harm to the environment, often through product and garment manufacture.

These chemicals can't break down, so once they reach nature (usually via factory water waste), they stay in the ecosystem and contaminate living organisms, working their way up the food chain. PFAS and PFCs are suspected carcinogens and have been known to affect mammal reproduction and hormone production. Therefore, many leading brands in the outdoor industry are now prioritising cutting out the use of these chemicals entirely to contribute to a more responsible manufacturing process.

How to care for a new waterproof product

PFC/PFAS-free waterproof products still perform effectively. However, they will require more frequent care (washing and reapplying a DWR) to ensure consistency. We stock various care products for this, which you can browse here. If this is your first time doing this, check out our easy how-to guide by clicking here.

Sizing Information
Tops/Jackets/Vests (cm)

XXS
XS
S
M
L
XL
XXL
Chest
76-80
81-85
86-91
92-97
98-106
107-114
115-122
Waist
61-65
66-70
71-75
76-81
82-90
91-99
100-108
Hips
84-88
89-93
94-99
100-105
106-114
115-122
123-130


Tops/Jackets/Vests (in)

XXS
XS
S
M
L
XL
XXL
Chest
29.9-31.5
31.9-33.5
33.9-35.9
36.2-38.2
38.6-41.7
42.1-44.9
45.3
Waist
24-25.9
26-27.6
28-29.5
30-31.9
32.3-35.4
35.8-39
39.4-42.5
Hips
33-34.6
35-36.6
37-39
39.4-41.3
41.7-44.9
45.3-48
48.4-51.2


Trousers (cm)

2

4

6

8

10

12

14

16

Waist

62-64

65-67

68-70

71-75

76-80

81-86

87-92

93-98

Hip

84-87

88-91

92-95

96-99

100-104

105-109

110-115

116-121

Inseam short

-

72

73

73

74

74

75

75

Inseam normal

77

77

78

78

79

79

80

80

Inseam long

-

84

85

85

86

86

87

-



Trousers (in)
2
4
6
8
10
12
14
16
Waist
24.4-25.2
25.6-26.4
26.8-27.6
28-29.5
30-31.5
31.9-33.9
34.3-36.2
36.6-38.6
Hip
33-34.3
34.6-35.8
36.2-37.4
37.9-39
39.4-41
41.3-43
43.3-45.3
45.7-47.6
Inseam short
-
28.3
28.7
28.7
29.1
29.1
29.5
29.5
Inseam normal
30.3
30.3
30.7
30.7
31.1
31.1
31.5
31.5
Inseam long
-
33
33.5
33.5
33.8
33.8
34.3
-
Professional Opinion
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