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Hic sunt dracones! Celebrate 30 years of EFF fighting digital dystopias with this glossy vinyl sticker assortment.

Our 30th anniversary design! EFF has your back, rough seas and monsters be damned. Printed on navy blue heather in sturdy Classic Fit or soft, stretchy Slim Fit for all bodies. T-shirt size chart.

EFF's annual DEF CON hacking conference t-shirt is online for the first time! Features a glitchy ERROR 2020 design with added surprises. Let's fix this! Check our size chart for sturdy Classic Fit or soft, stretchy Slim Fit for all bodies.

Receive one special edition EFF DEF CON 28 t-shirt, plus one EFF 30th Anniversary t-shirt! Choose one size for both items. Super-soft Slim Fit for all bodies, or sturdy Classic Fit. Size chart. Email us with any questions!

Our 30th anniversary design! EFF has your back, rough seas and monsters be damned. Printed on navy blue heather in sturdy Classic Fit or soft, stretchy Slim Fit for all bodies. Includes our new Multisticker Sheet and a black EFF beanie with embroidered letters. Size chart.

Our 30th anniversary design! EFF has your back, rough seas and monsters be damned. Your hoodie features glow-in-the-dark details on the back and sleeve. Sleek, athletic fit zip-up hoodies look great on all bodies. Soft, stretchy, mid-weight polycotton with minimal shrinkage. Size Chart.

EFF's annual DEF CON hacking conference t-shirt is online for the first time! Features a glitchy ERROR 2020 design with added surprises. Let's fix this! Check our size chart for sturdy Classic Fit or soft, stretchy Slim Fit for all bodies. Includes our new Multisticker Sheet and a black EFF beanie with embroidered lettering.