The 420 Sweater. The term 420 is widely used amongst cannabis users. The term is used to describe the activity of consuming recreational cannabis use. Legend has that the term 420 was coined by college students in California because they set out to smoke at 4:20pm. Amsterdamshirts.com have a direct connection with this because we are located in Amsterdam. We can relate to that culture. We print tasteful designs with a cannabis theme, clean and simple creative motives. You can imagine that when we started out printing t-shirts it never crossed our minds not to include cannabis related designs. Of course we started with funny ones and over time we became more sophisticated with printing techniques. Have a look at what we offer and maybe you’ll find your next favourite 420 sweater in our webshop.