The lifespan of safety seat belts for wheelchairs depends on several factors, including the quality of the materials, the frequency of use, and the care they receive. Generally, high-quality seat belts made from robust materials can last several years with proper maintenance. Regular inspection for signs of wear and tear, such as fraying, stretching, or damage to the buckle or fastenings, is essential to ensure they remain safe and effective. Manufacturers often provide guidelines on the expected lifespan of their products and recommended replacement intervals. However, it is crucial to replace the belt immediately if any damage is detected to prevent compromising the user's safety.