T-Shirt for 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 all have one that says sidekick on it! They come in different T-shirts, sweatshirts, hoodies, etc. search sidekick on nerdshop.dk This T-shirt is a T-shirt with a modern fit for women. Made of 100% ring-spun cotton, this single jersey fabric has a soft surface and is pre-shrunk. It also has a slim ribbed neckline. With a fabric weight of 153 GSM, it is a T-shirt of good quality. The colors may vary depending on the color of the T-shirt.