Enjoy Your Life: With the TOPK Food Fans, Protect your health and your family. Keep your food and drink fresh on tables. Adjustable Height: This fan features an innovative telescoping design that allows it to easily extend from 5.9 inches to 10.75 inches, meeting diverse usage scenarios and needs. It not only saves space but is also lightweight and portable, making it an essential companion for barbecues, picnics, parties, pool parties, and camping Safe and Durable: Constructed with high-quality ABS material, the fan ensures reliability and safety. Powered by 2 AA batteries (not included), it can be placed on any surface or hung using the built-in hook for convenient use at the table. Working Principle: It has holographic pattern on the blades.