Pros
The material they are made of absorbs moisture easily and is also good for retaining heat to keep your feet both warm and dry.
You have different options by which you can power them.
The heating element is made of carbon which does not wear out fast even with consistent heating.
You can wash them clean by hand washing.
They come with a discrete pouch for holding the batteries.
You can trust them to hold in as much heat as possible in different conditions since they are made of three layers.
They can be worn by both men and women.
Cons
You cannot wash them through the use of machines.
