When did Arthur Guinness found his Dublin brewery? The answer is as plain as the numbers on your shirt. Sold in the US since 1826, Guinness beer was already popular here when fans cheered early baseball teams in the 1840s. Uniforms had raglan sleeves for easy arm movement, just like this sporting, grey and green long-sleeved tee, with washed-effect letters and numbers; crew neck. Official Guinness merchandise. Mens sizes M, L, XL. Cotton/polyester for easy care. Machine wash.