Alvier Flex
Down Jacket for Men
£ 259.00 £ 155.00
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Designed for:
Don't be distracted by the cold when skiing: the Alvier IN Flex Jacket Men offers you a reliable insulating jacket to keep you warm. The jacket is filled with goose down and feathers. Pocket Weave technology delivers improved downproofing. The chambers woven into the material avoid the need for seams and increase the jacket's downproofing, heat retention and durability. In addition, a fleece section on the collar can be folded up to protect you from biting winds during a rapid descent.
High-quality hybrid jacket for more freedom of movement Our Mammut Pro Team athlete Jérémie Heitz is in his element: As part of his "La Liste" project, he travels the most spectacular four-thousand-metre peaks in the Alps and wants to go where the snow has never seen skis before. It protects itself against the cold temperatures in the mountains with the insulating jacket Alvier IN Flex Jacket Men. Pocket Weave Technology weaves chambers directly into the material. This avoids seams and improves down tightness. Heat retention, low weight and longevity are the result. The hybrid construction of the jacket reduces the material on the sleeves and sides for reduced circumference, greater freedom of movement and good moisture balance.


Item no.1013-00220 Weight [g]470 CutAthletic Fit


  • Extremely stretchy insulating jacket made from a combination of soft and matte Toray material and brushed fleece for freedom of movement and aesthetic appeal
  • Pocket Weave Technology: Chambers sewn directly into the material avoid seams and improve downproofing, heat retention, weight and durability
  • Hybrid construction with thinner material on sleeves and sides for reduced bulk, increased freedom of movement and good moisture management
  • Filled with 61 g 90/10 goose down with 750 cuin fill power
  • Fleece section on collar can be folded up for additional protection from cold and wind
  • 2 side pockets with concealed zippers
  • Contains non-textile parts of animal origin (down or leather)

Material & technology

Main material
86% Polyamide | 14% Spandex
90% White goose down | 10% White goose feather
94% Polyester | 6% Spandex
Mammut Down 750 cuin RDS - Responsible Down Standard Certified bluesign® PRODUCT


Machine wash on normal cycle (max. 30° C) Do not dry clean or use solvents to remove stains Do not use chlorine-based bleach Do not iron or treat with steam

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Shipping costs
Delivery is free of charge from a purchase value of £150 or more. A delivery charge of £6.95 will be applied to orders below this purchase value.

Delivery lead time
We aim to process all orders as quickly as possible - orders placed before 11 am (Mon-Fri) are generally dispatched on the same day. Orders placed after this time are dispatched the next working day at the latest, which means the delivery lead time is generally 2-5 working days. You will receive a dispatch confirmation including a tracking number as soon as we have transferred the order to our logistics partner.

Delivery country
In the online shop for european countries, deliveries can be made only within the following countries: Belgium, the Netherlands, Denmark, Italy, Poland, Slovenia, Slovakia, Spain, Sweden, Czech Republic.

Shipment tracking
Together with the dispatch confirmation, you will receive a tracking number and a link which you can then use to check the status of your parcel.


Tops - Men
Chest in cm 87-94 95-102 103-110 111-118 119-126 127-134
Waist in cm 73-80 81-88 89-96 97-105 106-114 115-125
Hip in cm 86-93 94-101 102-109 110-117 118-125 126-133
Tops - Women
Chest in cm 77-81 82-87 88-93 94-100 101-108 109-119 117-124
Waist in cm 62-65 66-70 71-76 77-83 84-92 93-101 102-110
Hip in cm 85-89 90-95 96-101 102-108 109-116 117-124 125-132


Mammut supplies its tops in four different fits, from body-hugging and athletic to roomy and comfortable. As a result, all mountain sport lovers can find just the right top to match their body and activities. Some models have a longer cut to offer comfort for the different needs of various kinds of sportive activities.


A very close fit around the upper body and arms, body-hugging, very elastic/stretchable materials.


Dynamic cut, defined body shape, pre-shaped sleeves, elastic/stretchable materials.


A close, athletic cut, with little tailoring, comfortable, some elastic/stretchable materials.


A wide, and in some places longer, cut on the upper body and arms, for a casual and comfortable fit, made from stretch materials.


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