Rab

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

Premium Confidence: Medium

Lowest price we found

£170 at Rab

In stock. Free delivery. Checked 8 Nov 2026.

RRP £170, checked 21 Oct 2026.

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All-mountain hikes, scrambles and ascents where the weather can turn

Weight: 349 g (M)
Waterproof rating (HH): 20,000 mm
Fabric: 40D Pertex Shield 3-layer waterproof fabric (133 gsm) with fluorocarbon-free DWR
Seams taped: Not published
Breathability (MVTR): 20,000 g/m²/24h
Leg zips: Full

Where to buy

Rab £170 In stock. Free delivery. Black, M regular in stock.

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 5/10

How much they add to your pack. 5: Does the job. Average for wild-camping gear.

Rab lists 348.5 g for size M (stored as 349 g), 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

20,000 mm hydrostatic head and 20,000 g/m2/24h breathability (Rab)
40D 3-layer Pertex Shield at 133 gsm
348.5 g in size M
Full-length two-way side zips with a snap at the hem, for venting and easy pull-on
Crotch gusset, knee articulation and drawcord-adjustable hems

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

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