VERO MONTE Womens 120D Wavy Pattern Opaque Tights Jacquard High Waist Pantyhose

Would this look good with heels? or would it be best to wear with shoes that cover up the foot like boots?

Are these see through?

Are they shiny? Some leggings have a cheap, shiny finish that I really dislike. I prefer a real matte finish.

How is it for extreme cold? It's often around -15 here. I'm thinking about wearing these under jeans.