UV Blocking - Covers block 90% of UV light and are perfect for dispensing IV admixtures that contain light-sensitive drugs.Opacity - IV Covers are Light Amber with slit at sealed endTransparent - Bags are transparent, but will mask many differences in IV fluid color.Thickness - 1.5-mil - 1.8 milQuantity - 100 per packDimensions: 5"W x 8½"H