Practical functions: easy onehand operation. It keeps out dirty objects and shields the floss from insects, dust, debris, and airborne particles, helping to prevent children from reaching into the cotton candy machine. It also prevents the inside cotton candy from flying out of the machine due to sugar overload. Reasonable size: Crystal Clear Plastic Bubble designed for use during cotton candy machine operation. 21inch diameter dome fits most 20inch to 20.5inch cotton candy machines. quality material: impact resistance provides strength and durability, helping prevent cracking and rusting. Durable polyester for impact resistance, clear visibility, easy access when making floss, and full protection for you. A accessory to your cotton candy machine. Clear visibility: The transparent design allows customers to clearly observe the making process and increases their anticipation for the finished cotton candy. The visible cover also makes it convenient for you to operate the machine. Adds safety and style to your cotton candy machine. Use scenarios: Home parties and family gatherings where you want a clean, safe setup and a visible candymaking process for guests. Small businesses, fairs, or festival stands where customers can watch the floss being made, attracting attention and boosting display appeal. Classroom demonstrations or school events to teach candymaking techniques while keeping the machine area tidy and safe.