Sometimes, moving house can feel like you're climbing a mountain. Good job they don't actually live on top of a mountain, eh? Unless they do live on top of a mountain, then this is literally the most perfect card they could ever have! although, I'd recommend posting it.
 
Details: 
 
Blank inside for your own message. 

Size: A6 (105 x 148mm / 4.1 x 5.8 inches). - that fits as a standard sized letter in the UK mail. 
Produced from sustainable sources and/or recycled materials 

100% recycled brown kraft envelope supplied.   Made in the UK.