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Hamilton and International Latex were never able to form an effective working relationship. In March 1965, Hamilton switched to B. F. Goodrich as suit supplier.<ref name=tjtm>{{cite book |title= The Journey To Moonwalking |author=Kenneth S. Thomas |year= 2017 |publisher= Curtis Press |___location= Great Yarmouth, Norfolk, UK |isbn= 9-780993-400223 | pages = 99–103 | url= https://books.google.com/books?id=cdO2-4szcdgC }}</ref> International Latex, in July 1965, won the Block II suit competition with its A5L design. This forced NASA to assume management of the Block II EMU program directly.<ref name=tjtm88-114>{{cite book |title= The Journey To Moonwalking |author=Kenneth S. Thomas |year= 2017 |publisher= Curtis Press |___location= Great Yarmouth, Norfolk, UK |isbn= 9-780993-400223 | pages = 88–114| url= https://books.google.com/books?id=cdO2-4szcdgC }}</ref> Before the end of 1965, Hamilton Standard completed certification of its new backpack.<ref name=tjtm80-87>{{cite book |title= The Journey To Moonwalking |author=Kenneth S. Thomas |year= 2017 |publisher= Curtis Press |___location= Great Yarmouth, Norfolk, UK |isbn= 9-780993-400223 | pages = 80–87 | url= https://books.google.com/books?id=cdO2-4szcdgC }}</ref> NASA subsequently terminated the Block II AiResearch backpack, thus completing the selection of the suit/backpack designs and suppliers to support man's first walking on the Moon. However, this was not to be without improvements. The Apollo 11 EMU featured an A7L suit with a -6 (dash six) backpack reflecting seven suit and six backpack design iterations.<ref name="us2"/> The A7L was a rear entry suit made in two versions. The Extra-vehicular (EV), which would be used on the Moon and the Command Module Pilot (CMP) that was a simpler garment.<ref name="us"/>
The ILC Dover team, however, collaborated quite well. Douglas N. Lantry, a scholar of the spacesuit manufacture in the Apollo era, notes that the teamwork displayed by the seamstresses creating the spacesuits demonstrated the effectiveness of overlapping and cross-training on each others' specialties and expertise.<ref>Lantry, D. N. (1995). Man in Machine: Apollo-Era Space Suits as Artifacts of Technology and Culture. ''Winterthur Portfolio'', ''30''(4), 203–230. <nowiki>http://www.jstor.org/stable/4618514</nowiki></ref> This team of seamstresses, led by [[Hazel Fellows]], included [[Iona Allen]], Delema Austin, Doris Boisey, Julia Brown, Delema Comegys, Joanne Thompson, Michelle Trice, Jeanne Wilson, and Delores Zeroles.<ref>{{Cite web |title=Dr. Emily A. Margolis Recognizes Women in STEM {{!}} Smithsonian American Women's History Museum |url=https://womenshistory.si.edu/blog/dr-emily-margolis-recognizes-women-stem |access-date=2024-03-27 |website=womenshistory.si.edu |language=en}}</ref>
The A7L pressure suits reached space flight in October 1968 aboard Apollo 7.<ref name=tjtm155-162>{{cite book |title= The Journey To Moonwalking |author=Kenneth S. Thomas |year= 2017 |publisher= Curtis Press |___location= Great Yarmouth, Norfolk, UK |isbn= 9-780993-400223 | pages = 155–162 | url= https://books.google.com/books?id=cdO2-4szcdgC }}</ref> These were used as launch and reentry emergency suits. Also in 1968, NASA recognized that with modifications, the Block II EMU could additionally support the later EVA missions that involved a Lunar Rover Vehicle (LRV). This resulted in the termination of Apollo Block III in favor of an Apollo 15 through 17 EMU using an A7LB suit and a "-7" long duration backpack.<ref name="us"/>
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====Constant Wear Garment====
The CMP wore a simpler cotton fabric union suit called the Constant Wear Garment (CWG) underneath the TSLA instead of the water cooled Liquid Cooling Garment. His cooling came directly from the flow of oxygen into his suit via an umbilical from the spacecraft environmental control system. When not performing lunar EVA's, the LMP and CDR also wore a CWG instead of the LCG.
== Apollo 15-17, Skylab and ASTP Spacesuits ==
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