Outdoor Research Women's PLUS SIZE Ferrosi Pants | Walking Trousers

Built for the trail. Designed for your body.

Meet the Outdoor Research Ferrosi Pants — the award-winning hiking trousers that move with you, not against you. Available in UK sizes 18 to 26 (US 16W–24W) in Short and Regular leg lengths, these are the outdoor trousers plus-size women have been waiting for: stretchy, tough, breathable, and built to last.

Whether you're tackling a long-distance trail, exploring a new city, walking the dog, or heading out on a van-life adventure, the Ferrosi pants keep up with every step.

A note from Rebecca, our founder: I'm still wearing the same pair I bought in spring 2023. They've done hundreds of miles — multiple long-distance trails, ultramarathons, and day hikes — and they haven't bobbled once. The inner thigh seam is still perfect (and yes, my thighs rub together).

FABRIC PERFORMANCE
Bluesign® approved 86% Nylon (46% Recycled), 14% Spandex — 90D Stretch Woven Ripstop

• Water & wind resistant
• Breathable & quick-drying
• Lightweight with movement-mirroring stretch
• Abrasion-resistant — survives thigh rub and rough terrain
• UPF 50+ sun protection

DESIGN FEATURES

• Harness-compatible waist with internal drawcord
• Brushed tricot-lined waistband for all-day comfort
• Metal shank button closure + bonded belt loops
• Drop-in hand pockets + right hip security zip mesh pocket
• Back right zip pocket + back left drop-in pocket
• Articulated knees for unrestricted movement
• Drawcord cuff adjustments

INSEAM LENGTHS

• Short: 73.5cm / 29in (discontinued — remaining stock only)
• Regular: 79cm / 31in

SIZING
Outdoor Research uses US sizing. Please measure up and use the size chart below — do not rely on your usual UK dress size. The size chart is at the bottom of the page.