These pad sets are all natural. These pads are specifically sized to fit mini coolers. Our pad is the most efficient and economical cooler pad on the market. These pads are specifically sized to fit all desserts, personal, and mini. This is the most efficient cooler pad in the market Wood Wool for air Cooler Suitable for Bajaj, Symphony, kenstar air material: imported wooed shavings/wool cooler grass cooling pads grass The hot air passes through the cooling pads first. The cooling pads that have already absorbed cool water are ready to move the cool air to the fan