Stay Cool seat liner - SMILE III The coolest SMILE in town Find a retailer Available for these products: SMILE III With the Stay Cool seat liner, you and your little one are ready for comfortable walks through summer heat. Quickly inserted into your SMILE III, the mesh fabric ensures a refreshing airflow for optimal temperature regulation to keep your child cosy at all times. The seat liner quickly absorbs moisture and dries fast for maximum comfort for your child. The Stay Cool seat liner is compatible with the SMILE III seat unit. JUMP TO ... Stay Cool seat liner - SMILE III Where to Buy Related products Stay Cool seat liner - SMILE III In Stock Find a retailer Where to Buy Related products