This is the softest and nicest pre-made bias that you will ever come across. It is what I use in nearly all my garments and I love how nicely it sits when sewn. It is the perfect size for finishing off your necks, armholes or even hems. When folded, the bias measures 25mm (1") and comes in a number of colors. I like to have them all on hand so I can simply select the one that closely matches my garment or is a fun contrast on the inside. 
 
I do not pre-wash or pre-shrink my bias before attaching. Attach to the garment using your preferred method and wash with the garment.