Do not buy these boots. I bought these boots a year ago and the sole rotted off. I don't wear them that often, only on weekends. When I reached out to the company they were very unhelpful and told me that the boots soles only have a 5 year life.
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Thank you for contacting Asolo-USA.
It’s tough to be certain without seeing images, but it sounds like the polyurethane midsoles may have started to dry rot on your boots.
Sole Units will degrade if your footwear is used only occasionally and is stored for long periods of time.
Sole units degrade faster than if the footwear is worn regularly.
Footwear that is stored, and not used, either by a consumer or retailer, will tend to shorten the life of the product.
Hydrolysis is a normal material aging process that occurs in all footwear with a cushioned PU midsole independent of the manufacturer.
The process also occurs in automobile tires, ski boots, helmets and does not represent lower quality or even a quality issue in materials or workmanship.
The natural decomposition of polyurethane is not specific to Asolo and will affect any modern-era hiking boots where PU is used in the construction of the mid-sole.
Product duration varies according to the type of boot, the methods of use/care and maintenance.
It is not possible to give a precise expiry date.
However, it is recommended to resole or replace boots that are stored under normal conditions (temperature, relative humidity) after five years from the date of manufacture.