The manufacturing process for half pant and half sleeve t-shirt 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 half pant and half sleeve t-shirt. This can be done by a fashion designer or a team of designers.
2. Material selection: The materials used for half pants and half sleeve 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 garments, 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 half pants, the pattern pieces may include the legs, waistband, and pockets, while for half sleeve t-shirts, the pattern pieces may include the front, back, sleeves, and collar.
4. Sewing: The pattern pieces are then sewn together using a sewing machine. This includes stitching the seams, hemming the edges, and adding any necessary details like pockets or embellishments.
5. Printing: If the half sleeve t-shirt has graphics or logos, they may be printed onto the fabric using screen printing or digital printing techniques.
6. Finishing: After the garments are sewn together and printed (if applicable), they undergo a finishing process to smooth out any rough edges and ensure that all seams are securely attached.
7. Quality control: Once the half pants and half sleeve t-shirts are finished, they undergo a quality control process to ensure that they meet the desired standards for fit, construction, and overall quality.
8. Labeling and packaging: The final step is to label the garments with any necessary information, such as size and care instructions, and then package them for shipment to retailers or customers.

Overall, the manufacturing process for half pants and half sleeve 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.