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  • Solid color t-shirts are 100% cotton; heather grey is 90% cotton, 10% polyester; charcoal heather is 52% cotton, 48% polyester
  • Ethically sourced
  • Slim fit, but if that’s not your thing, order a size up
  • 4.2 oz (145g), but if that’s too light, try our heavier Classic T-Shirt


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Geekdom [C64] - MOS Sid Chip 6581
Designed by ccorkin
The most famous music/sound chip of all time...the MOS (Metal Oxide Semiconductor) Technology SID (Sound Interface Device) Chip - 6581 created by the engineer Robert Bob Yannes for the Commodore 64!

Unisex T-Shirt

Geekdom [C64] - MOS Sid Chip 6581 by ccorkin