Fitzroy StretchShell PRO 20k Pants
Technical mountaineering and ski touring pants designed to deliver thermal protection and mobility in demanding winter conditions. Built with 3-layer StretchShell PRO fabric featuring a waterproof and breathable membrane (20,000 mm / 20,000 g/m²/24h), they provide an optimal balance between durability, comfort, and stretch performance.
The elastic waistband with Velcro adjusters ensures a perfect fit regardless of body shape, while Kevlar® reinforcements at the ankles offer exceptional protection against cuts and abrasion from crampons and skis, ensuring long-lasting durability in technical terrain.
YKK® zippers guarantee reliable performance even under intensive use, and the PFC-free DWR C0 finish maintains water repellency and breathability after multiple outings. The FITZROY Pants are the warmest in the range, designed to move with protection and unrestricted mobility in the most extreme mountain conditions.
FAST&LIGHT - 438g (S)
Fitzroy StretchShell PRO 20k Pants
Technical mountaineering and ski touring pants designed to deliver thermal protection and mobility in demanding winter conditions. Built with 3-layer StretchShell PRO fabric featuring a waterproof and breathable membrane (20,000 mm / 20,000 g/m²/24h), they provide an optimal balance between durability, comfort, and stretch performance.
The elastic waistband with Velcro adjusters ensures a perfect fit regardless of body shape, while Kevlar® reinforcements at the ankles offer exceptional protection against cuts and abrasion from crampons and skis, ensuring long-lasting durability in technical terrain.
YKK® zippers guarantee reliable performance even under intensive use, and the PFC-free DWR C0 finish maintains water repellency and breathability after multiple outings. The FITZROY Pants are the warmest in the range, designed to move with protection and unrestricted mobility in the most extreme mountain conditions.
FAST&LIGHT - 438g (S)
Activity
Alpinism, Skimo, Winter Outdoor
Equipment
3-layer StretchShell PRO waterproof (20,000 mm) and breathable (20,000 g/m²/24h) fabric
Inner grid structure for enhanced breathability and airflow
Elastic waistband, harness compatible
Kevlar® reinforced lower panels for abrasion and cut protection
Durable YKK® zippers
PFC-free DWR C0 exterior treatment repels rain and snow
Pre-shaped knees for optimal mobility
Ergonomic crotch design for unrestricted movement during technical ascents
Outdoor Fit: comfortable pattern that does not restrict mobility
Size
Suggested Size Reference (Height/Weight)
Weight
Size S — 438 g
Size M — 451 g
Size L — 476 g
Size XL — 491 g
Size XXL — 506 g
Technology
StretchShell PRO 3-layer
The StretchShell PRO fabric, composed of 89% Polyester / 11% Polyurethane with a weight of 217 g/m², offers 20,000 mm waterproofing and 20,000 g/m²/24h breathability, ensuring total protection against wind, snow, and moisture. Its 3-layer laminated membrane construction delivers consistent technical performance even under intensive use.
The PFC-free DWR C0 finish repels rain and snow without compromising breathability, extending the fabric’s lifespan. The bi-directional mechanical stretch enhances comfort and freedom of movement, while the Kevlar®-reinforced ankle structure increases durability against contact with crampons and skis.
Maintenance
Information about care and maintenance
