What is the name of Lululemon's popular women's zip-up jacket?

Lululemon’s popular women’s zip-up jacket is the Define Jacket.

The Define Jacket is a close-fitting, full-zip layer designed for commuting, warm-ups, travel, and everyday wear as well as studio use. Its streamlined shape, thumbholes on many versions, and familiar stand collar have made it one of the company’s most recognizable women’s products.

The name can be confused with other Lululemon outerwear. The Scuba Hoodie is a more casual hooded layer, while the Swiftly Tech line primarily refers to lightweight, sweat-oriented tops rather than this iconic jacket. “All Day Jacket” is also a Lululemon product name, but it is not the standard answer to this question.

Define Jackets have appeared in multiple fabrics, colors, lengths, and hooded or non-hooded variations over time. Older versions are especially associated with Luon, while newer releases may use different technical textiles. The product name, rather than a particular fabric, is the key identifying feature.