Closer to nature digital ear thermometer hygiene covers. available in packs of 40, these tommee tippee closer to nature digital ear thermometer hygiene covers are specially designed for use with the closer to nature digital ear thermometer. use to cover the tiny tip of your tommee tippee closer to nature digital ear thermometer and help avoid any spread of infection without affecting the accuracy of the reading. the tommee tippee closer to nature range was developed because babies are happiest when everything works just the way nature intended • especially when they're hungry.the tommee tippee closer to nature range was developed because babies are happiest when everything works just the way nature intended – especially when they're hungry. that's why the unique tommee tippee closer to nature baby bottles feature an extra-wide closer to nature teat--it mimics the flex and stretch of a natural breast, making it easier than ever before to combine breast and bottle feeding.