Dave Clark G3C initial production flight suits were only worn aboard Gemini 3.

The partial-wear feature of this suit, demanded by the long-duration missions planned for the Gemini program, comprised detachable suit components (sleeves, legs, helmets). This was the second of two partial-wear suit prototypes called for by the original contract; but MSC had, in the meantime, requested B. F. Goodrich to provide 14 more suits based on this design. The additional suits varied only in size; they were to follow the design of the prototype according to the spacifications of October 10, 1962. The prototype, originally designated G-2G, became G-2G-1 and the remaining suits were designated G-2G-2 through G-2G-15. MSC requested extensive design changes after evaluating G-2G-1 and several other suits. The final model was G-2G-8, delivered to MSC on January 21, 1963. It was later rejected in favor of a suit designed by David Clark Company, Inc., Worcester, Massachusetts, which incorporated B. F. Goodrich helmets, gloves, and additional hardware.

The current concept of the pressure suit as a single-wall pressure vessel was to be retained; the basic suit could be modified by such additions as loose thermal covering or gloves and boots. To attach the astronaut to the spacecraft during extravehicular operations, a tether long enough to allow access to the spacecraft adapter section would be used; it would include 12 nylon-encapsulated communications wires. The tether's only purpose was to attach the astronaut to the spacecraft; maneuvering and maintaining stability would be accomplished by other means. Provisions for extravehicular operations were to be provided from spacecraft No. 4 on. One-half hour of useful time outside the cabin was specified as the basis for systems design.

The definitive contract for Gemini space suit was signed with the David Clark Company. Negotiations had been completed May 28. The estimated cost was $788,594.80, with fixed fee of $41,000 for a total cost-plus-fixed-fee contract of $829,594.80.

Several components needed approval before being incorporated into the G3C flight suit configuration; CSD completed a statement of work for procuring the flight suits January 17; G3C suit procurement was expected to begin in March. Qualification and reliability tests of the G2C suit were also expected to begin in March.

Manned Spacecraft Center (MSC) Procurement and Contracts Division reported that the amendment to the Gemini flight suit contract covering G3C flight suits and related equipment for Gemini-Titan (GT) 3 had been sent to the contractor, David Clark Company. The first four Gemini flight suits, to be used in GT-3, were delivered to MSC late in August. Because of earlier problems in fitting training suits, astronauts had had preliminary fittings of the flight suits before final delivery.

While in the suit, the astronaut flew several zero-g flight profiles, went through a simulated four-day Gemini mission, and experienced several centrifuge runs.

The test utilized a human volunteer and ended successfully on December 11. The suited subject used Gemini food and bioinstrumentation and the Gemini waste management systems hardware.