In 1977, researchers from NASA used their experience with the fabrication of space suits to develop a special suit that would allow Vetter to get out of his bubble and walk in the outside world. The suit was connected to his bubble via an eight-foot (2.5 m) long cloth tube and although cumbersome, it allowed him to venture outside without serious risk of contamination. Vetter was initially resistant to the suit, and although he later became more comfortable wearing it, he used it only seven times. He outgrew the suit and never used the replacement one provided for him by NASA.