keyboard case

 1: soft: 1,5 mm foam + water resistant outer material, durable lining inside.

 2 : stiffened: absolute impact resistant, light, durable lining inside, round about 30 mm foam-bed, bottom, front -and backside stiffened with 4,5 mm synthetic card with air-gap, waterproof outer cover.

Bearing and shoulder strapsfor both types, extra reinforcing (metal slider, metal rivets)