Double Your Impact!

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

Our Stay Golden t-shirt features EFF's mission with pale gold and glow-in-the-dark details. It's a tribute to your resilience and our power together through darkness. Check the size chart for super-soft Slim Fit for all bodies, or sturdy Classic Fit.

EFF's annual DEF CON hacking conference t-shirt is online! Our Liberty Mecha reemerges from the land of 8-bit with added surprises. Check our size chart for sturdy Classic Fit or soft, stretchy Slim Fit for all bodies.

Receive one EFF Stay Golden t-shirt, plus one special edition EFF DEF CON 29 Pixel Mech t-shirt! Choose one size for both items. Super-soft Slim Fit for all bodies, or sturdy Classic Fit. Email us with any questions!

EFF's annual DEF CON hacking conference t-shirt is online! Our Liberty Mecha reemerges from the land of 8-bit with added surprises. Check our size chart for sturdy Classic Fit or soft, stretchy Slim Fit for all bodies. Includes a Multisticker Sheet and a black EFF beanie with embroidered lettering.

Our Stay Golden t-shirt features EFF's mission with pale gold and glow-in-the-dark details. It's a tribute to your resilience and power. Check the size chart for super-soft Slim Fit for all bodies, or sturdy Classic Fit. Includes a Multisticker Sheet and a black EFF beanie with embroidered letters.

Our 30th anniversary design! EFF has your back, rough seas and monsters be damned. 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.