Sheldon Coopers 'Opti Blocks' Shirt

This mind bending, blindingly yellow shirt is known simply as 'Opti Blocks'. It was originally from Heavy Rotation but you can also purchase it from the Amazon link below.

Featured on The Big Bang Theory episodes

S02 E18: "The Work Song Nanocluster"
S03 E04: "The Pirate Solution"
S03 E18: "The Pants Alternative"
S04 E01: "The Robotic Manipulation"
S06 E09: "The Parking Spot Escalation"
S07 E13: "The Occupation Recalibration"
S11 E09: "The Bitcoin Entanglement"