As this 100% cotton Star Wars Wear Your Helmet 30 Single T-Shirt states, 'it is always important to wear a helmet'. You know, because if your X-Wing is shot down in space the helmet will protect you against the...explosive decompression? I wouldn't ask questions. You have to wear the helmet to pilot those sweet space fighters! It is part of the Rebel Alliance's flight gear...that and the Star Wars Wear Your Helmet 30 Single T-Shirt which is super soft, distressed, and features an image of Luke Skywalker in his battle rattle against the backdrop of the first Death Star! You'll be ready to fly down trenches in between turbo laser fire in no time.