Meet the Arcteryx Kyanite Jacket Women’s, a stretch fleece vest built for layering on the trail or around camp. It sits close to the body without a hood, providing core warmth without bulk.

Thanks to its Polartec® Power Stretch® Pro construction and a blend of 53% polyester, 38% nylon and 9% elastane, this vest offers a balance of warmth, durability and mobility. The regular fit means it moves with you whether you’re scrambling up a rocky ledge or moving around a chilly campsite. At just 320 grams, you can easily stow it in your pack when the sun comes out, and the Bluesign® approval speaks to a focus on responsible, low-impact manufacturing.

Polartec® Power Stretch® Pro is a two-layer knit textile with a smooth outer surface and a grid-knit inner layer that traps body heat while allowing moisture to escape. The added elastane fibers give it four-way stretch, so the fabric retains its shape over time and adapts to your movements without restricting you.