On Zero Jacket - Ultralight Packable Weather Protection

The On Zero Jacket is an ultralight, packable jacket built for all-weather protection. Water-repellent and windproof construction tackles elements whilst maintaining breathability. Designed with athlete input across every feature.

Windproof Water-Repellent Construction

Windproof fabrics block wind whilst water-repellent surface provides protection from rain. The lightweight materials allow easy, fluid movement without restricting natural running motion. Breathable construction prevents overheating during efforts. Reflective elements enhance visibility in low-light conditions.

Spiral Dart Elbow Construction

Spiral dart elbow design improves mobility during arm swing. This construction allows natural movement without fabric bunching or restriction. Featherlight materials ensure nothing weighs you down across varied paces.

Integrated Pocket for Packing

The entire jacket packs into an integrated pocket for compact storage. This packability works for carrying as backup protection on trails, commutes, or uncertain weather days. Easy to stash in packs, belts, or larger pockets when not needed.

Key Features:

- Ultralight packable construction

- Windproof fabrics

- Water-repellent surface

- Breathable materials

- Lightweight for fluid movement

- Spiral dart elbow construction

- Enhanced arm mobility

- Integrated packing pocket

- Featherlight weight

- Reflective elements

- Athlete-approved design

Best For:

- Variable weather running

- Trail running

- Commute running

- Backup weather protection

- Packable layers

- Windy conditions

- Light rain protection

Is the Zero Jacket Right for You?

For runners needing windproof, water-repellent protection that packs down when you don't need it. The featherlight construction maintains breathability without feeling restrictive during efforts. Spiral dart elbows provide natural arm movement rather than fighting fabric tension. The integrated packing pocket means the jacket stows into itself—useful for early morning starts when weather might change or trail runs where conditions vary with elevation. A great choice if you've avoided packable jackets because they either lack proper wind protection or feel clammy once you're working hard.