T-Shirt for a bachelor party, birthday, etc. Are you going to have 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 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 rib-knit collar. 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.