Our Nordic Hats and Headbands fit well underneath helmets of all sorts. Our Nordic products are unlined and light-weight, thus they will sit snug on your head, keeping you warm, without being bulky. We suggest pairing helmets with Nordic products.
Our Alpine Hats and Headbands are lined with a mid-weight fleece and are thus bulkier than the Nordic Hats and Headbands. Some of our customers find they fit just fine underneath their helmet, but the Nordic Hats or Headbands might be a safer choice for the greater majority.