The human eye can make 100 trillion calculations per second. Consequently, vision is consistently ranked as the most critical sense among human senses. This pocket slider reviews insightful facts about your eyes and how to protect them throughout a lifetime. Interactive learning is easy with this sliding informational card. Each bullet point is augmented with interesting information provided through a clear viewing window. The two-sided pocket slider is made on high quality, glossy card stock that is durable and fun to use. Printed in full colorQuality card stock with gloss coatingHigh perceived value