NOS Type Three Winter Work Trousers

WWII New Old Stock Imperial Japanese Army Type Three Winter Work Trousers. Green cotton like body. The interior is a slightly lighter green color and feels insulated. Also feels like there is some type of water proofing material sewn inside as it makes a slight "cracking" noise when you grab it. Then stamped metal buttons in fly. No pockets. Appears unissued but there are three small white spots on rear.  The waist measures out to about aisze 32. Would be hard to upgrade these.