Uggs, the iconic Australian sheepskin boots, are known for their comfort and warmth. But some customers are asking if they can exchange their old Uggs for new ones. The company has received a few complaints about the boots not being warm enough. Ugg Australia says it is working to fix the issue. Customers who have exchanged their boots say they’re warmer now and more comfortable. But some people are worried that the company is trying to make too many changes to the product. ..