Rubbish!! Bought air cooler. Absolutely useless. Informed that if it’s been used it won’t be refunded, (so how do you know if it’s working ok?....) and to package it as it was for sending to another customer. They’ve received it, responding that it’s on the lowest setting, and that proves what?? Ah, that we used it at the lowest setting, of course. Our fault. Undeniable proof it isn’t useless!!!!????? Or, who knows.... maybe at its lowest setting it’s useless and on another which we did try is useless. Over £50 wasted on a pressie I was really excited about giving to my husband. Stress no more?? Guess not because I won’t be using them again