This is a heavy vinyl with a thickness of aprox 1 mm.
Whe LuvLola strongly recommends interfacing when intended for bagmaking, it may not be necessary with this product. 
Sewfuse plus, Emmaline heavy and decovil light are great options.
For strict structure, stabilizing is necessary.
Domestic machine friendly.
Backing is similar to a felt material.
Cut is approximately 17"-18" × 53"-56"