In the post-Judgment Day future, men in the Resistance (Kyle, Derek, future!John) will wear in the field:
Boxers
2 (33.3%)
Briefs
2 (33.3%)
Boxer briefs
3 (50.0%)
G-string/Thong
0 (0.0%)
Jockstrap
2 (33.3%)
Nothing at all under their trousers--they're going commando both literally and figuratively.
2 (33.3%)
Something else I'll mention in the comments.
0 (0.0%)
In the post-Judgment Day future, women in the Resistance (Allison, Jessie, Lauren, Kate) will wear in the field:
Traditional bra
1 (11.1%)
Sports bra worn as an undergarment
7 (77.8%)
Athletic top/shirt with built-in support, worn as an outergarment
2 (22.2%)
No bra or support
1 (11.1%)
Panties
2 (22.2%)
Thong/G-string
0 (0.0%)
Boyshorts (I'm not even sure what these are, but whatever)
4 (44.4%)
Whatever lower-body underwear the men wear
3 (33.3%)
No lower-body underwear (repeat "commando" joke here)
1 (11.1%)
Something else I'll mention in the comments.
0 (0.0%)
For reference: ( images, spoilery for 'Born to Run' )