Equestrian. This Depression-era pattern for fall-front jodhpurs has jaunty cuffed trousers, the requisite reinforced inner leg, and three pocket pieces, including one for a watch pocket:
(Click the image to see sold listing with back of envelope.)
Interestingly, this copy of Butterick 5647 is stamped Pattern Made in Canada. Although the pattern was produced in women’s, misses’ and girls’ sizes, the early equestrian patterns that survive are usually in smaller sizes—intended for riding lessons, perhaps?
For more vintage equestrian patterns see my Year of the Horse post.