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the OMM Core Zipped Vest
See our entire range from the OMM here!
The OMM Core Zipped Vest is an ultralight and breathable insulated vest for trail running, ultra running, fastpacking and hiking. The vest combines PrimaLoft® ACTIVE 125 g/m² with a full-length zipper, a warming collar and a practical chest pocket.
Weighing only around 135 grams in size M, the Core Zipped Vest provides effective insulation over the torso without the extra bulk around the arms. It can be worn as a breathable outer layer during high activity or under a windbreaker or shell jacket when you need more warmth.
PrimaLoft® ACTIVE is made from synthetic insulation fibers woven into an open mesh material. The construction creates insulating air pockets without the extra layers of fabric typically required in traditional insulation garments.
The result is a warm, lightweight and compressible garment that continues to insulate when the material gets damp. PrimaLoft® ACTIVE also wicks away moisture and helps you dry faster during long activities.
The open material has very high air permeability. When the vest is used as an outer layer, air can move through the construction and quickly transport away excess heat.
Under a windbreaker or shell jacket, the insulating air is retained and the vest becomes significantly warmer. You can therefore regulate the temperature by opening or removing the outer layer – or by using the vest's full-length zipper for extra ventilation.
The Core Zipped Vest provides very limited wind protection on its own. In cold or windy weather, it works best with a windbreaker or shell jacket.
The full-length zipper makes the vest easy to put on and take off, even when the weather or activity level changes quickly. The zipper can be opened to release heat during intense periods.
The soft collar is designed to reduce cold air ingress around the neck. A zippered chest pocket provides secure storage for smaller items like keys, cards or energy gel.
Ultralight active insulation vest
PrimaLoft® ACTIVE 125 g/m²
Weighs approximately 135 grams in size M
Very high air permeability
Effective ventilation during high activity
Continues to insulate when the material is damp
Efficient moisture transport
Small packing volume
Full-length zipper
Chest pocket with zipper
Soft collar that reduces cold drafts
Flatlock seams positioned away from the shoulders
Reflective logo
64% post-consumer recycled material
Effective together with a windbreaker or shell jacket
Suitable for trail running, ultra running, fastpacking and hiking
The Core Zipped Vest uses PrimaLoft® ACTIVE 125 g/m² and weighs approximately 135 grams. It has a full-length zipper, a warming collar and a zippered chest pocket.
The Core Vest is a lighter pullover model without a full-length zipper. It uses the thinner PrimaLoft® ACTIVE 75 g/m² and weighs approximately 72 grams. Choose the Core Zipped Vest when you prioritize more warmth, easier donning and doffing, and the ability to ventilate with the zipper.
The OMM Core Zipped Vest has a body-hugging fitted fit. It's designed to sit comfortably over a base layer and work seamlessly under a windbreaker or shell.
Typically, choose your regular size for a technical fit. If you are between sizes or want to wear the vest over a heavier midlayer, the larger size may provide more room.
Type: Active insulation vest with zipper
Area of use: Trail running, ultra running, fastpacking and hiking
Material: PrimaLoft® ACTIVE
Material weight: 125 g/m²
Weight: Approximately 135 g in size M
Fit: Fitted
Zipper: Full length
Pocket: Chest pocket with zipper
Collar: Soft collar that reduces cold drafts
Seams: Flatlock seams placed away from the shoulders
Detail: Reflective logo
Recycled content: 64% post-consumer recycled material
Material standards: bluesign® and OEKO-TEX® approved
Always follow the washing instructions on the garment label. Turn the vest inside out and close all zippers before washing. Avoid washing with garments that have Velcro fasteners, as these can damage the open PrimaLoft® ACTIVE material. Do not use fabric softener.
The OMM Core Zipped Vest is a form-fitting, sleeveless midlayer with PrimaLoft® ACTIVE insulation. It's designed to be worn over a thin base layer and under a windbreaker or shell jacket.
| Size | Chest circumference | Waist circumference | Body length |
|---|---|---|---|
| XS | 80–86 cm | 70–76 cm | 155–162 cm |
| S | 86–92 cm | 76–81 cm | 162–173 cm |
| M | 92–102 cm | 81–86cm | 173–183 cm |
| L | 102–110 cm | 86–92 cm | 178–188 cm |
| XL | 110–117cm | 92–97 cm | 185–193 cm |
The measurements refer to body measurements and not the actual measurements of the vest. The chest circumference is the most important measurement when choosing a size.
The Core Zipped Vest has OMM's body-hugging fit, "Fitted". It should follow the upper body without being constricting. A close fit reduces unnecessary volume and allows the vest to work smoothly under a windbreaker or shell jacket.
The model uses the OMM men's/unisex size chart. It is intended to accommodate a thin base layer, but not several thick layers underneath.
Measure around the widest part of your chest, just below your armpits. Keep the tape measure horizontal and close to your body without pulling it tight.
Measure around your natural waist, usually where your upper body is at its narrowest. Stand relaxed and avoid holding your stomach in.
Measure your height without shoes. Use the length measurement as a complement to the chest and waist measurements.
Try the vest on over your normal base layer. Zip it up completely and move your arms forward, up and back.
The right size means that:
If the vest is tight across the chest, pulls on the zipper, or restricts movement, you should choose a larger size. If it forms large folds or slips around the arm openings, a smaller size may provide better function.
