Das EFX Undeground Boom Bap Rap 90s Hip Hop T-Shirt. Das EFX emerged in 1991 from the well-established East Coast Hip-Hop scene their first album “Dead serious” released in 1992, they were known for their ultra-fast rap associated with funky beats. They named themselves "DAS" standing for "Dray and Skoob" and "EFX" meaning "effects" . Printed on comfortable soft Regular Fit 100% ringspun Cotton Men T-Shirts. Size 2XL is available on heavy cotton. Custom designed by independent artist imported and exclusively sold. Machine wash inverse with like colors and dry on low heat. Quick worldwide shipping.