Oxford Extreme Index Cards feature extra vivid colors, with 4 wild color combinations in each pack. The different colors on each side provide many color coding options for greater organization. 3 x 5 inch cards are ruled on lighter color shade and are made from 10% recycled fiber with 10% post consumer fiber. Multi-color includes: Yellow/Pink, Red/Blue, Lime Green/Orange, Sea Blue/Purple. 100 cards per pack.