The covers that trap heat best are the ones with a thicker wadding which are the:

  • Luxury Fleece
  • Pure Cotton Waffle
  • Belgian Pimlico Linen
  • Lochcarron of Scotland Tartan
  • Cashmere

These covers will take a second for you to feel the warmth through the cover, however, will trap the heat inside the bottle longer compared to other covers.If you are looking to find a cover where you can feel the heat through the cover straight away, we recommend you go with the lighter wadding covers which are the:

  • Pure Japanese Cotton
  • Liberty Fabric