Where are you going in Alaska and what are you planning on doing? Fishing in Valdez or the pan handle in the summer in an open boat, you'll need some pretty substantial gear. A tour boat ride where you can get inside, not so much. If most of you trip is in the interior a light jacket, hat and boots will do fine. We fish Valdez in an open boat for hours so we carry GorTex parka's, pants and boots. Since we're right on the water and the water seldom gets much over 50, we also use gloves, sweat shirts and long underwear. Interior temps may be near 75-80 and sunshine.