OMM Core Boxers Utilising the lightest weight 75g/m2 PrimaLoft Active insulation, the Core Boxers are a highly insulating first layer, perfect for harsh conditions and cold overnights. Utilising PrimaLoft ACTIVE fabric, the Core Boxer Shorts have high-insulating properties, to keep you warm and cosy during cold weather conditions. Perfect for harsh conditions and cold overnights, with a fabric construction that has an exceptional warmth-to-weight ratio, the boxers have a minimal bulk design, in order to keep things lightweight and prevent distractions. The Core Boxers have a PointZero fly cover, which acts as a wind and moisture barrier, to keep you feeling fresh and comfortable, even in extreme conditions. The garment has a wide elasticated waistband, keeping them up and in place during intense movement, and they use 58% recycled materials for a sustainable clothing option.