Aequilibrium Lite Insulation Jacket Women's (2025)

$127.49 ~~$209~~ In stock

The Aequilibrium Lite Insulation Jacket is designed for swift starts and technical climbs, offering optimal warmth-to-weight ratio and freedom of movement. It combines Pertex® Quantum and Polartec® Power Grid™ fabrics for breathability and warmth, and features harness-compatible pockets and a hood that can be worn over your helmet for practicality on the wall.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Daniel K. ★★★★★ Oct 21, 2026

The Pertex fabric feels incredibly light but still blocks the wind nicely during chilly morning starts. I love how easily it packs into its own pocket for when the sun warms things up on the approach.

Aurora X. ★★★★★ Oct 19, 2026

The Pertex fabric feels really durable against branches on my alpine starts, and the Polartec lining breathes perfectly during steep approaches without overheating. It packs down small enough to stash in my summit pack too.

Alexander R. ★★★★★ Oct 18, 2026

I was worried it wouldn't be warm enough for early morning starts, but the Polartec® insulation really delivers without any bulk. The freedom of movement is fantastic for reaching overhead holds on technical routes.