| Pressure | TBD |
| Suit mass (1g) | TBD |
| Life support (primary) | Not publicly documented |
| Life support (backup) | — |
| EVA duration | N/A |
| Program | Apollo R&D |
| Agency | NASA |
| Manufacturer | ILC Industries |
| First use | 1965 |
| Status | Experimental — A7L precursor |
| Donning / entry | Not publicly documented |
Direct development step toward the operational A7L suit
Apollo lunar suit architecture refinement
Not publicly documented
"Iterative refinement process between A4-H and the eventual A7L flight suit"
Critical link in ILC's winning Apollo suit design lineage
"Established B.F. Goodrich as the lead US full-pressure suit contractor before Mercury existed"
"Parallel development track alongside Model O testing different mobility solutions"
"Naval and NASA pressure suit research tracks cross-pollinated significantly in this era"
