If you just recognized it a week and a half after your original order, the jackets are probably already sent to your old adress. Even if you changed the adress. The postal service might offer a mail forwarding service for this, if you told them of yo...
Wear several light layers - that way you can add and remove as necessary to be comfortable.
Yes, definitely! They offer practical jackets such as lightweight but waterproof ones. They also sell waterproof camouflage jackets.