Siser Printable Sub Block

Siser Printable Sub Block is a specialized heat transfer vinyl designed to block dye migration on sublimated polyester garments like sports jerseys and athletic wear. Featuring a charcoal adhesive and semi-gloss finish, this large-format printable HTV delivers vibrant, true-to-color designs on performance fabrics. Compatible with Solvent, EcoSolvent, and Latex printers, it's CPSIA-certified and ideal for professional decorators working with team uniforms and promotional sportswear.