The 500VB with vacuum and up- air provides the tools that professionals count on. Pressing without vacuum leads to a damp ironing surface, making it impossible to get a clean, crisp finish for your garments. The secret to great finishing is to keep the ironing table dry by removing the moisture from the fabric. Use vacuum for pressing a shirt or putting in a crease, while up-air (blowing) is great for delicates, removing the risk of leaving an impression or crushing the nap.