M Waterproof Over Trousers – 25,000 Mm – Taped Seams

Our team of enthusiasts has designed these over-trousers so you can walk in rainy weather and stay completely protected.Waterproof over-trousers that use a combination of a lightweight, breathable fabric and a sturdy fabric to help protect you from the elements.

Hybrid structure

Combination of a durable and protective fabric (147g/m2; 70 Denier) on areas to be protected from friction (knees, lower leg, buttocks) and a light and breathable fabric (109 g/m2; 20 denier) elsewhere.

Side zips

Use of a waterproof zip with a double slider to both regulate body temperature and easily put the over-trousers on without the need to remove boots.

Press-studs at the waist and ankles.

Protection

Bottom of trouser leg has an elastic strip with silicone inside to improve grip on the boot.

Hook at bottom of trouser leg to attach to the boot laces to prevent the over-trousers from riding up while walking.

Water resistance of the fabric

The water resistance of a fabric, provided by a coating or a membrane, is measured using the Schmerber rating or millimetres of water (pressure exerted by a column of water). The higher this rating is, the more waterproof a material is.

This jacket has two waterproof components (norm JIS L 1092):
– The main component is very waterproof. It is resistant to 25,000 mm of water (Schmerber rating) before washing
– The secondary component is at thigh level and is resistant to 25,000 mm of water (Schmerber rating) before washing

Water resistance of the over-trousers

A jacket’s water resistance is not only determined by its components: The technique that is used to assemble the different parts is also an evaluation criterion.
Whether it is ironed or sewn and then made waterproof, the overall water resistance of your jacket is measured using a shower test developed by Decathlon, which simulates rainfall of different intensities.

So, these MT500 waterproof overtrousers protect you from a rainstorm in the mountains, that is 450 litres of water /m²/h for 4 hours.

Sizes

Slightly fitted cut to reduce excess material and weight.
Choose your usual size or a size above if you are wearing them over very thick trousers.

Inside leg length: 86.6 cm in size 44 (L)
Width of trouser hem: 20.1 cm in size 44 (L)

Fabric breathability

To find out if a fabric is breathable, we test its evaporative resistance RET (ISO 11092 standard). The lower the fabric’s resistance, the more water vapour evaporates, and the higher the fabric’s breathability.

It is considered that if: RET < 9 = very breathable fabric
9 < RET Most durable fabric: RET Lightest fabric: RET < 8 (or 2,972 g/m²/24h, standard JIS1099A)

Information about water-repellent properties and how to reactivate them.

A fabric’s water repellent property is its capacity to make water run off of its surface without seeping in.
This prevents your product from soaking up water, and keeps it lightweight and breathable. The fabric is made water-repellent by treating its outer surface, however this property may deteriorate with use.

The water-repellent properties can be reactivated by warming the jacket in a tumble dryer on a low heat for 10 minutes.
You can also use the FORCLAZ re-waterproofing spray (ref 855490)