Perfection Evolved. Version 2.0 of our premium ultralight has an improved fit that's more comfortable, mobile, and flattering, with more room in the chest; a slightly longer length for added coverage and warmth; a softer fabric to further enhance the comfort; and a secure drawcord hem to seal out cold and fine-tune the fit.As an ultralight insulating layer, the MicroTherm is thinner than traditional down jackets. But that combination of minimal bulk and effective warmth is what makes it special, and is the result of its patented construction and the exceptionally high-loft goose down that it holds close to the body for maximum thermal efficiency.NOTE: Temperature ratings are based on a controlled laboratory test by an independent university lab. Also consider: your sensitivity to cold and wind-chill; time of exposure; activity level; and use of layering.NOTE: As a reference for comparison, we have included the customer reviews of the MicroTherm 1.0 below. Any reviews dated prior to July 30, 2018 are for the MicroTherm 1.0. All reviews dated after July 30, 2018 are for the new MicroTherm 2.0.Models shown are 5'9" to 5'11" tall, wearing size S/4, L/12, or XXL/18.
Your Privacy Choices
On this website, we use cookies and similar tracking technologies, and allow our advertising partners to use such technologies, so we can, among other things, show you ads promoting Authentic Brands on other sites and services. These activities may be considered “sales,” “sharing,” or “targeted advertising” under certain privacy laws.
To opt out, slide the toggle below to “off” and then click “Confirm My Choices.” Note that you will need to renew this opt-out choice if you visit our website from another device or browser or if you clear your cookies. You can also opt out by visiting our website with a legally-recognized opt-out preference signal, such as the Global Privacy Control.
In addition to cookie-based ad targeting, we may disclose certain personal information, such as your email address and purchase information, to our affiliates, and advertising partners for marketing and advertising purposes. You may opt out of these disclosures by submitting this Opt-Out Form.
For more information about our privacy practices, please see our Privacy Policy.