Rab

Rab Firewall Waterproof Pants (men's, size M, regular leg)

Premium Confidence: Medium

Lowest price we found

£160 at Ellis Brigham

In stock. Free delivery. Checked 8 Nov 2026.

RRP £160, checked 21 Oct 2026.

Hardwearing rain cover for mountain hikes and multi-day treks in a bleak forecast

Weight: 326 g (M)
Waterproof rating (HH): 20,000 mm
Fabric: 40D Pertex Shield 3-layer waterproof fabric (148 gsm, recycled polyamide face) with fluorocarbon-free DWR
Seams taped: Not published
Breathability (MVTR): 20,000 g/m²/24h
Leg zips: Half

Where to buy

Ellis Brigham £160 In stock. Free delivery. Free delivery over £100.

View at shop

Rab £160 In stock. Free delivery. Black, size M regular in stock (page stock data).

View at shop

Prices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More

1 to 10, compared with the whole market. Each says what it's based on. How we score

From maker's figures 6/10

How much they add to your pack. 6: A bit better than average.

Rab lists 325.5 g for size M (stored as 326 g); Ellis Brigham also lists 326 g. That is in the 290-369 g band.

Estimate from maker's specs: hydrostatic head figure 8/10

How well the fabric and seams keep out heavy, long rain, when new. 8: Clearly better than most.

Estimate from maker's specs

Hardwearing rain cover for mountain hikes and multi-day treks in a bleak forecast
Pulling on quickly over boots with a 3/4 side zip
Walkers who want 3-layer Pertex Shield at 325.5 g

20,000 mm hydrostatic head and 20,000 g/m2/24h breathability (Rab)
40D 3-layer Pertex Shield at 148 gsm, hardwearing per Rab
325.5 g in size M
3/4-length side zip, elasticated waist with drawcord and drawcord-adjustable hems
Knee articulation and a long-length gusset

We haven't tested this ourselves. Every score comes from these specs, tests and reviews.

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