the OMM Core Neck Warmer

the OMM Core Neck Warmer

See our entire range from the OMM here!

The OMM Core Neck Warmer is an extremely lightweight, soft and effective neck warmer , designed to seal out cold air and retain body heat in cold and exposed conditions. Weighing in at just 16 grams , it is one of the most weight-efficient ways to increase comfort during runs, mountain hikes and overnight stays.

The neck warmer is made from OMM's revolutionary Core material , made from PrimaLoft® Active 75 g/m² . The insulation consists of synthetic plumes woven directly through an open, stretchy mesh , creating fleece-like warmth at less than half the weight and very high breathability. The construction provides effective insulation while quickly wicking away excess heat and moisture.

The Core Neck Warmer works equally well wet or dry . PrimaLoft® Active continues to insulate even when wet and has fast moisture transport and quick drying time , reducing the risk of chilling during breaks or rapid weather changes. This makes it equally useful during cold runs as extra warmth in your sleeping bag during chilly overnight stays .

The four-way stretch construction , rolled hem and minimal seams provide a comfortable, chafe-free fit with very low bulk around the neck. The neck warmer is one-size-fits- all and easy to tuck into your pocket, running vest or sleeping bag when not in use.

Like the rest of the Core range, the Core Neck Warmer is made with synthetic insulation to ensure performance in wet conditions, and 58% of the insulation is made from recycled materials . It is Bluesign® and OEKO-TEX® certified , making it a sustainable choice for demanding adventures.

Features & Benefits

PrimaLoft® Active 75 g/m² – high warmth-to-weight in a minimal format

Extremely light weight (~16 g) – always worth having with you

Insulates even when wet – reliable in humid conditions

Very good moisture transport – dry and comfortable during activity

Soft and flexible fit – minimal bulk, maximum comfort

Perfect for both activity and sleep

Features

Neck warmer in synthetic active insulation

PrimaLoft® Active insulation (75 g/m²)

Four-way stretch

Rolled edge for increased comfort

Minimal seams for reduced chafing

Quick-drying and easy-care material

Technical specifications

Weight : approx. 16–17 g

Insulation : PrimaLoft® Active 75 g/m²

Material : Stretchy mesh with woven synthetic insulation

Sustainability : 58% recycled material , Bluesign® & OEKO‑TEX® certified

Fit : One size (Unisex)

Suitable for

Trail running, mountain running, ultra running, fast packing and overnight stays in chilly conditions – when you want maximum warmth around your neck and shoulders at absolutely minimal weight .

Care instructions

Wash according to manufacturer's instructions. Air dry. Store uncompressed for best insulation performance.