I bought these for my Granddaughter to go with the Black Leather Motorcycle Jacket I purchased for part of a Halloween costume. These aren't part of the costume,but are for outings requiring an ensemble using the jacket and these. The fabric is a durable stretchable yet light,with the zippers securely fastened. Amazing quality and construction! The shimmer comes from the texture of the fine fabric! At this time(she's 10 years old,5')she can fit them,but will outgrow them so at least she'll get a few years out of them with the stretch-ability. Started wearing them as soon as acquired! Thanks from us goes to Amazon for their awesome business and Leggings Queen for a quality and beautiful product! She said she wants more!!I said in time!