What is the best way to clean my fleece jacket?
The fleece jackets can be washed in normal wash cycle at 30°C or by hand wash. They should not be put in the dryer and should not be bleached. The jackets should not be ironed.
Do I need to wash my fleece jacket before wearing it for the first time?
That is entirely up to you. You can of course wash your fleece jacket once before wearing it the first time, but you don't have to. :-)