PrimaLoft® ACTIVE Insulating Fabric weaves PrimaLoft® fibres onto a mesh, giving a super high volume and open structure. Fabrics insulate by trapping pockets of air that the wearer’s heat cannot pass through. Core structure is exceptional at creating these pockets. However, the openness also allows for a light breeze to disturb these air pockets and remove the insulation effect. Core uses this to its advantage; put a light shell on over the top for the best possible warmth to weight layer and then when you get too hot adjust/remove only the shell and you can keep pushing hard to the summit without a bulky layer to stash.
A single mesh fabric holds the insulation plume in place, reducing the need for extra fabric layers and halving the weight and pack size.
At OMM we always choose synthetic insulation over down to be sure that we can get warm even when everything is wet. We believe PrimaLoft® make the best synthetic insulation and so it is an easy choice for us. 125g/m2 PrimaLoft® ACTIVE uses 64% post-consumer recycled material, it is also bluesign and Oeke-Tex approved.
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What's the fit like?
Most OMM Clothing tends towards the “fitted” end of things. Designed for performance use, the fabrics often work best close to the skin whilst also reducing drag and bulk when moving quickly. We use three different fits in our clothing ranges; Contact Fit, Fitted & Regular Fit. This gives you an idea of how the Midlayer is meant to look and fit. You’ll find a link to the Fit Guide on each product page. You also find a link to our Size Guide, a more in depth table that shows measurement ranges for each size. Midlayers should fit comfortably over a First Layer and are designed to work well with our Outer Layers.
What is Core?
A new concept in active insulation; the OMM CORE Range is made entirely from PRIMALOFT ACTIVE ultra-light insulating fabric.
Built from a synthetic plume woven through a knitted mesh, CORE offers the warmth of a fleece but with less than half the weight.
Paired with a shell, the CORE is an incredibly effective insulator but thanks to near-total air permeability, the lightest breeze can take away that heat. This allows you to keep your CORE layer on even when you have warmed up and you can thermoregulate by removing/unzipping your shell.
CORE works wet or dry with incredible wicking properties to ensure you won’t stay wet for long.
How do I care for my OMM Midlayer?
Just like owning a top end sports car, a piece of performance clothing is only as good as how well you care for it. In the same way a sports car still needs oil changes and screen wash, you need to regularly maintain your OMM Midlayer to keep it performing at its best. It is important to follow the Product Care Instructions and use the correct wash product as these can affect your clothing’s performance. In the case of CORE, we recommend turning it inside out and doing up all zips. Also avoid washing with other clothing that uses velcro. Care Guide Here
Pullover or zipped?
We use a combination of pullover and zipped styles in our Midlayers. Which you prefer comes down to personal preference and end use. A pullover tends to be lighter (no zips to weigh you down) but may be more awkward to pull on and off when the need arises. A full zip means its easy to pull on and allows for venting but it adds a little more bulk and the fit tends to be not quite as close and lots of zipped layers under a zipped shell can mean a stack of zipper pulls under your chin. Either way, both will do the trick, its up to you to decide!