T-Shirt for a bachelor party, birthday, etc. Are you planning a bachelor party? Then this would be perfect for the groom or bride! And the rest of the party should have one that says sidekick! They are available in different t-shirts, sweatshirts, hoodies, etc. search sidekick on nerdshop.dk The hoodie is a simple and stylish classic hoodie, it is a must-have for any hoodie lover. The fabric is a blend of 80% ring-spun cotton and 20% polyester or 70% ring-spun cotton (depending on the color), 30% polyester, with a fabric weight of 280gsm.