A "flex suit blazer" is a type of blazer specifically designed with added stretch and flexibility in the fabric, allowing for greater movement and comfort compared to a regular blazer, which is typically made with more structured, less stretchy materials and is considered more formal; essentially, a flex suit blazer prioritizes comfort and mobility over a stiff, traditional look.
Flex suit blazers often incorporate elastane or other stretch fibers into the fabric, while regular blazers may be made from pure wool or cotton with minimal stretch.
Flex suit blazers tend to have a more relaxed, flexible fit that conforms to your body movement, while regular blazers might have a more structured, tailored fit.