I am making a "hat" of sorts for my BIL. It's from a baseball cap pattern, with earwarmers at the sides. It's to wear underneath a hardhat outside in the rain and snow. The outside is water repellent fabric, with a layer of polar fleece and a layer of flannelon the inside. Would you think this is warm enough?
Second, how should I finish the seams so the air won't get through? I am using a microtec needle, one that's used on water repellent fabric, but I would think there's something else.
Also, any tips I should know?
Thank you.