Reversible, heavyweight padded MA-1 bomber jacket by men's ba-tsu (late 1980s). Made in black nylon, it is a fairly faithful execution of an MA-1 style produced to an extremely high standard. Details are as you'd expect: zip front, ribbing at neck, cuffs, and hem, buttoned flap pockets at the waist and single zipped shoulder pocket at the shoulder. Reverse size has embroidered, very wordy ba-tsu branding-cum-slogan, as follows:

"Genuine clothes created specifically / for men who count /  who know exactly what they want from life / men who've experienced hardship / men who've got noble hearts

THIS LABEL ON OUR GARMENT / IDENTIFIES GENUINE MEN'S BA-TSU / STANDARD & TRADITION

SATISFACTION GUARANTEED / everytime - curiosity working garment / tough tailored for extra / high quality wear / produced by BA-TSU co., Itd.

We won't boast to you / about our fashion products / Try them and feel them for yourself" 

(have to say, it feels like there was a boast or two in there, and "we won't boast to you about our fashion products / try them and feel them for yourself" seems a bit like a boast in its own right, just one with plausible deniability built in)

Size L (JP mens/unisex)
Check measurements to confirm fit
All measurements taken flat

Shoulder width: 53.5 cm
Width (at underarms): 70 cm
Length (neck to hem): 70.5 cm
Sleeve length: 67.5 cm
Hem width: 48.5 cm (ribbing, intended to stretch)

100% nylon outer, 100% polyester lining, 100% acrylic fill
Presumed made in korea
Late 1980s

More items by ba-tsu here.