STIO Women's Vests

Frequently Asked Questions

• What insulation and shell materials do Stio women's vests use, and how do they affect performance?

  Stio uses a mix of synthetics and down: Octa™ lightweight knit (Dawner, ~100g) and PeakFill™ Active (Fernos, ~40g) for high breathability and fast drying, PrimaLoft® Gold Eco (Azura, ~60g) for reliable warmth even when wet, and 650‑fill responsibly sourced down (Turnbolt) or 100% recycled down with Pertex® Quantum (Pinion) for maximum warmth-to-weight and packability. Shells range from stretch nylon plainweave with PFAS‑Free DWR to Relance™ Primeflex and recycled Aerlon™, balancing weather resistance, stretch, and moisture management.
• Which Stio vest is best for high‑aerobic activities like trail running or ski touring?

  For high aerobic pursuits, the Fernos Insulated Vest and Dawner Vest are top choices: Fernos uses lightweight, highly breathable PeakFill™ Active (40g) made for fast drying and vertical gain, while the Dawner’s Octa™ knit (100g) offers excellent breathability, low weight, and packs into its own zip pocket for quick stowage. Both have low‑profile, mobile shells that layer well over base layers without trapping moisture.
• How should I size a Stio women's vest and layer it with other outerwear?

  Stio vests are offered in a regular fit with hip‑length coverage designed to accommodate baselayers and light midlayers without restricting range of motion; choose your normal size if you plan to wear them over a base layer, or size up for thicker midlayers. Look for adjustable hems and dropped tails (Dawner/Azura) to seal out drafts, and note many models are cut slim enough to slide comfortably under rain shells or ski shells.
• How does the Turnbolt Down Vest compare to the Azura Insulated Vest?

  The Turnbolt uses 650‑fill responsibly sourced down for maximum loft and mountain‑lifestyle warmth with a classic aesthetic, making it ideal for cold, low‑activity days. The Azura uses PrimaLoft® Gold Eco (60g) synthetic insulation, which provides a better warmth‑when‑wet profile, sleeker princess seams for a tailored silhouette, and a fully adjustable low‑profile hem for more active layering and commuting use.
• What sustainability features are built into Stio's women's vests?

  Stio has removed PFAS from all newly developed products as of 2024 and is committed to using 75% Preferred Materials (recycled fibers, responsibly sourced down/wool, organic cotton) by the end of 2025. Several vests feature 100% recycled insulation or recycled outer shells, responsibly sourced down options, and bluesign®‑aligned materials like PrimaLoft® Gold Eco in the Azura.