The manufacturing process for oversized t-shirts can vary depending on the specific materials, design, and production methods used. However, here is a general overview of the typical steps involved:

1. Design: The first step is to create a design for the oversized t-shirt. This can be done by a fashion designer or a team of designers.
2. Material selection: The materials used for oversized t-shirts can include synthetic fabrics like polyester or natural fibers like cotton. The specific materials chosen will depend on the desired look and feel of the t-shirt, as well as their performance characteristics such as drape, softness, and durability.
3. Cutting: The fabric is cut into the desired pattern pieces using a cutting machine or by hand. For oversized t-shirts, the pattern pieces may be larger than those used for standard t-shirts.
4. Sewing: The pattern pieces are then sewn together using a sewing machine. This includes stitching the seams, hemming the cuffs, and adding any necessary details like pockets or embellishments.
5. Printing: If the oversized t-shirt has graphics or logos, they may be printed onto the fabric using screen printing or digital printing techniques.
6. Finishing: After the t-shirt is sewn together and printed (if applicable), it undergoes a finishing process to smooth out any rough edges and ensure that all seams are securely attached.
7. Quality control: Once the oversized t-shirt is finished, it undergoes a quality control process to ensure that it meets the desired standards for fit, construction, and overall quality.
8. Labeling and packaging: The final step is to label the t-shirt with any necessary information, such as size and care instructions, and then package it for shipment to retailers or customers.

Overall, the manufacturing process for oversized t-shirts can be complex and involve multiple steps, but attention to detail and quality control are essential to ensuring that the finished products are comfortable, fashionable, and of the highest quality.