OPACITY NOTE:
Level 1: It is totally see-through that needs to cover the neck.
Level 2: It is see-through that might need an inner to cover the neck depending on the colour.
Level 3: It is semi see-through that needs a double layer to cover the neck.
Level 4: It is almost opaque and does not need a double layer to cover the neck.
Level 5: It is totally opaque.
