The main theme of this set can be summed up in one word: tight. It's an outfit from SB that I never actually obtained in-game, so I don't know its official name—I just know its item number is 55. That game has a lot of outfits locked behind NG+ or NG++, but the game itself isn't really my cup of tea...
Aside from the bodysuit, there's also a sweater vest and a cardigan. The cardigan isn't worn properly—it's more like half‑on, half‑draped. Putting it on Fallout 4's famously broad‑shouldered skeleton is a disaster, so I removed the cardigan and kept only the vest...
Two color schemes: one black‑and‑white, one military green...
Without the cardigan, the outfit does feel a bit too light (and I suspect few people would wear the sweater vest anyway). So I grabbed a military jacket from TFD, which happens to match the green tone perfectly.
So now the set includes: the bodysuit, the vest, and the military jacket.
Foreword:
Any mod that changes the head model (such as race mod, neck beautification mod, etc.) is likely to cause neck peeling!
Support Bodyslide. (I suggest not using it, the original version has a great body shape. *My outfit is not compatible with the preset that is suitable for CBBE body shape because my base body is different from CBBE. My base body shape is like the one in the picture, while CBBE is thinner, so directly applying the preset is often thicc than what you want. Additionally, try to avoid using the "Apple" slider for the Butt, as it may cause deformation around the sacral region.)