Technical Data

Skiing is a sport and therefore your ski wear should fit well and be comfortable. All our ski jackets, pants and one pieces are made by highly experienced ski wear designers and ski wear manufacturers. Garments and fabrics and designs undergo rigorous testing in terms of performance.

High Water Resistance

Above 5,000mm is considered really good and 10,000mm or above is excellent. This can operate in conjunction with critical seam sealing to ensure that moisture does not permeate the outer membrane in wet conditions.

Fabrics selected for manufacturing ski wear are chosen for their technical abilities obtained through manufacturing techniques. The fabrics have pores which are larger than a molecule of sweat (to allow for evaporation and wicking of moisture away from the body) but smaller than a molecule of water. This allows your ski wear to be breathable, water resistant and comfortable. 

High Moisture Permeability/Breathability

To measure how effective a garment is at transferring water vapour or sweat out of the garment. Fabric pores that prevent water ingress allow smaller sweat molecules to escape to keep you drier and warmer. This is measured in grams, for example, how many grams of sweat per square metre can escape a garment in a 24 hour period. The higher this is the better a garment is at keeping you consistently at a comfortable temperature and dry. 

Above 5,000g/sqm.24hr is considered really good

Above 8,000g/sqm.24hr is very good and enables perspiration vapour to be released from the garment during active exercise. This standard of fabric technology enables you to keep dry and comfortable during a full day of moderate activity and will easily handle sustained periods of high activity. 

High Water Repellency (100% is good) so that the fabric does not become saturated in wet conditions. Most ski wear is not produced to wear in wet conditions - it is manufactured to withstand cold, snow and dampness, not rain. Garments with High Water Repellency often are not breathable or as comfortable and are more like an anorak. 

Fabrics and Linings Defined

Thermolite Insulation provides warmth and comfort without adding weight or bulk. It dries 20% more quickly than other insulating fabrics and 50% more quickly than cotton. 

Primaloft Insulation offers superior performance for high quality cold weather clothing. It is soft, lightweight and breathable with excellent water repellency. The user should be able to remain dry, warm and comfortable in extreme conditions. 

Perfortex is exclusive to Fusalp. It's a waterproof, windproof, breathable and microporous membrane. A synthetic layer is laminated on the internal layers of the fabric to increase efficiency. The tiny size of the micropores enables moisture to exit the garment whilst preventing penetration from rain, wind or snow.

Bluesign is an international independent standard based on resource productivity, consumer safety, air and water emissions as well as worker health and safety. Total transparency along the textile production line without compromise on functionality, quality and design. Many of the garments we sell are produced to this standard.

Oeko Tex Standard 1000 is a testing, audit and certification system for environmentally friendly operations in textile and clothing industries. The aim is to continuously improve performance and working conditions. Many of the garments we sell are produced to this standard. 

Quilting traps the insulation layers to compress them and make them less bulky whilst still providing the same warmth. The removal of bulk is good for the skier who wants to look good, stay warm and have easy flexibility and movement whilst skiing. Many ski jackets are quilted for this reason.

Outer fabrics are often made of 100% polyamide which consists of many tiny polymers. There are two main types of polymers in polyamides that contain sweat-wicking properties. Polymers contain polarized ends that have negative and positive charges. The charged ends attract water molecules, which in turn leave the surrounding material and move away from the skin. This fabric is designed therefore to repel moisture from the outside of the jacket, keeping you warm and dry.

Inner fabrics may be made of 77% polyamide and 23% polyurethane – here the role of the polyamide is to repel moisture that you might make, so that no sweat lies close to your skin or base layers thus preventing you from getting cold and wet. The polyurethane (PUL) fabric is waterproof, durable and has a slight crossgrain stretch and is used in items that are required to be largely waterproof. Most PUL fabric is made by laminating lightweight polyester interlock knit fabric to a 1 millimetre thick film of polyurethane. There are two processes used for lamination: solvent lamination which fuses the fabric and polyurethane film into a single monolithic fabric and hot melt which uses heat activated glue to adhere the fabrics together. This laminated fabric is useful as a wind and/or water barrier in the construction of fluid-splash protecting garments, including shower curtains and outerwear clothing.

Lining 1 may be made of 100% polyester to keep you warm.

Lining 2 may be made of 100% polyester wadding or batting is a layer of insulation used in quilting between a top layer, in this case the inner fabric and a bottom layer of the backing material, in this case lining 1. It is also used for duvets as it is washable and suitable for people with allergies.


Down filled ski jackets provide great comfort and warmth for skiers. They also provide a natural feel. Typically down from older birds is used as their feathers are larger and more fluffy.

Fill power is measured in cubic inches per ounce. An ounce of down is compressed by weight in a glass cylinder. It's ability to bounce back and loft is calculated as its fill power. Fill power ranges from 400-900 and down outerwear ideally falls in between 550-800. 

A higher percentage of down to feather is preferable as feathers don't have as much loft. 

To create down ski jackets the down can be placed in the garment and then sewn through. Alternatively the down can be placed in individual rows which is known as Box Baffle. Occasionally ski wear is made using a blend of both techniques with Box Baffle on the body and Sewn Through used on the sleeves. 


Some Winternational jackets are fur lined or trimmed. Whilst we do not condone cruelty to animals in any way, we do believe that managed fur offers significant environmental benefits. Fake fur is produced using petroleum petrochemicals which are a non-renewable resource. On the other hand, fur is a renewable resource and it is on this basis that we continue to offer it to our customers, furthermore fur performs exceptionally well in cold weather conditions and is a natural product. Our policy is to use naturally farmed fur products.

Any questions?

Feel free to call or email - you can reach us on 01235760077 or at