Multicolour striped cotton trousers by issey miyake men (circa 1990s). Fabric has seersucker-y texture, and cut is loose-ish straight-ish through leg. No belt loops, instead waist adjusted via fabric belt incorporated into waistband of trousers.

Size 1-2 (JP mens S-M)
Check measurements to confirm fit
All measurements taken flat

Waist (circumference): 76-82 cm (adjusted via fabric belt)
Front rise:
 32.5 cm
Thigh width:
 30 cm
Total length: 108.5 cm
Inseam length:
 78.5 cm
Cuff width: 25 cm

99% cotton 1% polyurethane
Made in japan
C. 1990s