I cannot express enough, how happy I am with this product! It is extremely smart and very well made invention. I have wonderful winter jacket, and I wanted to continue using it with baby, because maternity winter jackets are either too expensive or not warm/waterproof enough. With Kumja I saved money and got to use the jacket I love. The guide for the zipper adaptor is very easy to use and was on spot. Quality of the details is exeptional. It is one of the best products I met during pregnancy and postpartum. Highly recommend!