T-Shirt for a bachelor party, birthday, etc. Are you planning a bachelor party? Then this would be perfect for the groom or the bride! And the rest of the party should have one too, with "sidekick" written on it! They are available in different T-shirts, sweatshirts, hoodies, etc. search for sidekick on nerdshop.dk This T-shirt is a women's modern fit T-shirt. Made of 100% ring-spun cotton, this single jersey fabric has a soft surface and is pre-shrunk. It also features a slim rib-knit neckline. With a fabric weight of 153 GSM, it is a T-shirt of good quality. Colors may vary depending on the color of the T-shirt.