If this is the case, are some leathers affected in this way than others?
Answer (first posted by @DWFII ): Warm weather creates moisture in the form of perspiration within the shoes. This allows the leather to stretch. Warm weather also has a tendency to make your feet swell a little as capillaries expand and more blood flows and pools in the foot.
Cold weather hardens the oils/fats in the leather and prevents the fiber slippage that might allow the leather to stretch.
The fact that this is a recurring cycle...as your post seems to imply...only indicates that this leather has a high degree of memory--it remembers the size and shape it had when it came off the last. I would make a wild guess and ask "Are these shoes shell?"
This Q&A was originally posted in our informative Leather Quality and Properties thread. Have a question and can't find an answer? Want to contribute your knowledge to the community? Try here:http://www.styleforum.net/t/354137/leather-quality-and-properties
For more threads and articles on leather properties go here: http://www.styleforum.net/tag/leather
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