I am just in the process of preparing for my next trip to Lapland for two and a half weeks.
Temperatures could range from +10 - -10, though there is unlikely to be any snow.
Here is my clothing;
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Craghopper shirt, Dockers wool shirt, two t-shirts, fleece, boxers and three grades of merino wool socks, thin set of merino wool thermals, a pair of craghopper trousers and my zoot suit.
other kit;
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Dry bags, bergan liners, possibles pouch, wash kit, head torch and batteries, camera, mobile phone, spare phone and camera batteries + solar charger, Opinal knife with firesteel, tinder pouch (including matches in waterproof container), GPS & compass, sharpening kit and notebook. I also have my US military poncho, a sleeping bag and first aid kit.
Food;
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Sun dried tomatoes dried peas and beans for soups, sunflower seeds, dried fruit, soya mince and preserved sausage.
I have a Bergaus Vulcan backpack which with everything inside weighs 16kgs.
I will be wearing my Swanndri hooded bushshirt and carrying my binoculars and personal medication.