All mats are derived from wood. They are a natural product and therefore they can take on or lose moisture based on humidity and temperature.
To keep your mats in perfect condition please take note of these care instructions:
Store mats in their original box
Store mats flat when not on display (in a folio box or other)
Mats are suitable for framing or for displaying in a Window Folio Box or Folio Art Frame
Store in a cool, dry environment, away from direct sunlight or heat sources
When using mats on a reveal wall, only add them to the wall when necessary - don't leave them on the wall overnight or for extended periods of time
If you have mats on display you should lay them flat each night
Using the Ultimate Mat:
Always start on a flat surface – both your mat & print should be laid flat
Position the print and slide in from the top of the mat
Use two hands to keep the print straight while inserting (gloves can help avoid fingerprints on your prints)
As your print nears the bottom of the mat, hold the bottom of the mat down to 'lock' the print in place (there's no need to lift the bottom when sliding the print down)
To release the print & re-use the mat, simply release from the top by lifting the top up