1970's, athletic knickers in navy, by Sunbuster best

1970's, best athletic knickers in navy, by Sunbuster. There is no size labeled (Men's), so please refer to measurements for accurate sizing. There is no contents label, but I believe they are either all cotton or a cotton/poly blend, with a smooth, lightweight windbreaker feel. Snap waist with zip fly. Zip side pockets. Zip back pocket. Adjustable, velcro cuffs. There is a light spot on one back beltloop and there are faint stains on the front of one leg, see last picture, otherwise in great condition.
17 3/8" across waist
20.5" across hips
13" front rise
16.25" back rise
20.75" inseam
12.75" across thigh
6.75-7.75" across cuff