STIO Women's Clothing

Frequently Asked Questions

• What fabrics and insulation technologies does Stio use in women's apparel, and how do they perform for high-output activities?

  Stio mixes technical textiles like Polartec Alpha Active (100% polyester, ~60g insulation) and Polartec Power Wool (polyester exterior with merino interior) with Fortis Stretch Interlock and responsibly sourced down to balance breathability, moisture management, and warmth-to-weight. Those synthetics ventilate and dry quickly for stop‑start efforts, Power Wool resists odor and insulates when damp, and down delivers superior packable warmth for lower-exertion or après use.
• How should I size Stio women's tops and bottoms for layering and active use?

  Stio generally runs true to size according to its size chart, and product pages include model size information to help you decide. Stick with your regular size for base layers and technical tights, size up one for heavier layering or if you prefer extra room in midlayers, and be aware some tights can be less forgiving around larger calves, thighs, or glutes.
• Which Stio jackets and midlayers are best for cold, variable mountain runs and what features should I prioritize?

  For high-output mountain runs prioritize pieces with Polartec Alpha or breathable synthetics—examples include the Stio Alpiner Hooded Jacket for insulated, active use and lighter Polartec or Power Wool midlayers like the Basis Power Wool Zip Neck for odor control and moisture shedding. Look for adjustable hems and cuffs, wind-resistant shells, zippered pockets, reflective details, and packable down or synthetic insulation so you can modulate layers as intensity and weather change.
• How does the Stio Alpiner Hooded Jacket compare to the Women's Pinion Down Sweater for winter running and après-ski?

  The Alpiner Hooded Jacket is tuned for endurance efforts with breathable, active insulation and features that shed heat during sustained motion, while the Pinion Down Sweater uses down clusters for a higher warmth-to-weight ratio and superior compressibility for packability. In short, choose Alpiner-style insulated synthetics for wet, high-output activity and the Pinion Down for colder, lower‑sweat situations or layering when maximum warmth and packability matter.
• Are Stio tights like the Glide High Rise Tech Tight suitable for high-intensity trail runs and cold-weather training?

  Yes, Glide-style tights built with Fortis Stretch Interlock provide four‑way stretch, antimicrobial properties, and a high-rise fit designed for coverage during dynamic movement, plus quick‑dry performance for sweat management. They work well for cold-weather training when paired with a light wind layer and can be snug on larger calves or thighs, so consult the size chart and consider sizing up if you plan to layer or want extra thigh room.