Montane Prism Pants


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  • Black Montane Prism Pants
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Insulated Legwear, Part of the Famous Prism Range!   


The Prism Pants are highly packable insulated legwear that can be worn immediately post-exercise to gain a quick warm fix, or as superb Alpine insulation. These pants provide formidable warmth for their low weight and pack size; perfect for long distance trekking or climbing. These are also good if your are in a static situation. The insulation will keep you warm while your not moving and because its synthetic if it gets damp it will still work great.

Fabric: PERTEX® Microlight Mini Rip-stop Filling: 40g PRIMALOFT® SILVER ECO Lining: PEAQ Synthetic Zips: YKK reverse coil semi-auto

Colour: Black / Graphite lining

Weight (approx.): 295g (M)

Sizes: S, M, L, XL, XXL. Available in regular leg length only.

Fit: Active Mountain Activities: Fast Alpine / Mountaineering / Mountain Walking / High Trekking / Backpacking / Basecamp / Mountain Marathon / Biking/ Hunting/Stalking.


PERTEX® Microlight Mini Rip-stop outer fabric that is completely windproof, fast drying and features exceptional durable water repellency
40g PRIMALOFT® SILVER ECO insulation throughout is warm, packable and exceptionally fast drying
Articulated knees and diamond crotch for step high movement
¼ length side leg zips for access, ventilation and the ability to pull over trail footwear
Press stud ankle adjustment for tight fit against footwear and to prevent heat loss
Reflective details for mountain safety
MONTANE® stuff sac perfect for storage on the move


PRIMALOFT® SILVER ECO Insulation 160g/m², 133g/m², 100g/m², 60g/m², 40g/m² performance synthetic mid-loft insulation 100% polyester with minimum 50% recycled content Warm when wet and fast drying Wind resistant and water repellent Compresses like down

Fibres produced from post-consumer and post-industrial plastic waste Bluesign® certified fabric: manufactured to strict environmental standards using safe production methods which eliminate the use of harmful substances .

PERTEX® Microlight Mini-Rip-stop 52g/m² 30D x 30D 100% nylon mini rip-stop Air permeability 1.0cc max (JIS L 1096 / ASTM D737) Spray rating 80 / 20 (JIS L 1092) Abrasion resistance 40,000+ at 12.5k PA (BS EN ISO 12947-2).

Bluesign® certified fabric: manufactured to strict environmental standards using safe production methods which eliminate the use of harmful substances.

PEAQ Synthetic 56g/m² 40D x 40D 100% polyester plain weave taffeta Exceptional comfort next to skin Highly breathable and fast drying


Prism Pants use PERTEX® fabric which contains a Durable Water Repellency (DWR) as the first barrier to keeping you dry. Clean your garment in order to maintain this. Machine wash in warm water at 30°C/86°F with a mild detergent. MONTANE® recommends that you use Nikwax Tech Wash. Do not use fabric softeners or bleach. Drip dry. Your vest may need occasional re-proofing to restore the DWR. MONTANE® recommend Nikwax TX Direct. Please see for more information.