the OMM Core Fleece Mitt

the OMM Core Fleece Mitt

See our entire range from the OMM here!

The OMM Core Fleece Mitt is an ultra-lightweight, insulating fleece mitt developed for high-intensity activities in cold and exposed environments . Designed to be worn alone in dry conditions or paired with a waterproof shell mitten when the weather is windy and wet – a flexible solution from valley to peak.

The Core Fleece Mitt is part of the OMM Core range , which is based on a new approach to active insulation . It is made entirely of PrimaLoft® ACTIVE 125 g/m² , where synthetic insulation fibres are woven directly into an open mesh material . The construction creates an exceptionally high insulation volume to weight ratio by trapping air close to the skin, while the open structure allows for almost free air permeability .

This combination means that the Core Fleece Mitt provides effective warmth when the intensity is low , but quickly releases excess heat when the heart rate increases. When you put on a thin shell over the mittens, the airflow is blocked, giving a very high warmth-to-weight ratio . This way, you can regulate your temperature by adjusting just the shell , rather than having to remove the insulation.

Like all OMM products, the Core Fleece Mitt is designed to perform even when wet . PrimaLoft® ACTIVE insulates when wet and has excellent moisture transport , ensuring the mittens dry quickly and don't get cold when the intensity varies.

Weighing only about 30 grams per pair, they take up minimal space in your pack , making them perfect for trail running, mountaineering, alpine climbing and competitions where every gram counts.

Features & Benefits

Extremely light weight (~30 g/pair) – barely noticeable in the pack

PrimaLoft® ACTIVE 125 g/m² – high insulation at low weight

Active heat regulation – insulates when needed, releases heat at high heart rate

Works wet or dry – reliable in changing conditions

Perfect as a liner or solo mitten – maximum flexibility

Valley-to-summit design – a garment for all day wear

Features

PrimaLoft® ACTIVE insulation

Open mesh construction for maximum breathability

Flatlock seams

Elastic fit

Extended cuff

Reflective logo

Color-coded size

Technical specifications

Weight : approx. 30 g (pair)

Material : PrimaLoft® ACTIVE

Insulation weight : 125 g/m²

Construction : Open mesh with woven insulation plume

Fit : Fitted / Unisex

Suitable for

Trail running, mountain running, hiking, mountaineering and cold weather racing with varying intensity – especially when you want to be able to fine-tune your warmth with a shell rather than changing layers .

Care instructions

Wash according to manufacturer's instructions. Avoid fabric softener to preserve the insulation's function and moisture transport.

Never tried OMM before or just need a little help finding the right size? You can find size charts and help finding the right fit HERE!