Luftwaffe paratrooper (Fallschirmjäger) jump smock. A so-called "Knochensack". Smocks were made with green cloth as well as cloth showing a camo print. Tan & water camo, as well as splinter camo patterns, were issued. This example comes with a tan and water camo pattern printed on the cloth. A rather late-war-issued example. 

Zippers: All Ri-Ri plastic zippers are fully working. All are factory-attached,
Front buttons: Blue glass buttons. Period time attached by the factory.
Press buttons: All fully working and present, except a missing one on one of the cuffs
Pistol holster buttons: Period time attached by the factory.
Breast eagle: Machine-embroidered EM/NCO type. Correct type with blue wool backing. Period time machine-attached by the factory.
Lining: A mix of cotton and rayon lining.
Markings: "IIIb" Size and 0/0250/0908 "Reichsbetriebsnummer" stamped, associated with Franz Weck, Berlin.

The Smock has fresh colours and minimal signs of use. It's in excellent condition with one small hole at the lower back part of the smock.