The original #7A Standard Front Bag was invented by Protektor Model's founder, Basil Tuller in 1938. Includes a hard bottom for added stability.This front bag was designed to be combined with a Rabbit or Bunny Ear Rear Bag with the added Hard Bottom. It Is the perfect combination for sighting in rifles or shooting ranges up to or slightly over 200 yards. The base of this bag measures approx. 5-1/2" L x 5-1/2" W x 4" H from bottom to top of saddle where the forend of the rifle rests and is approximately 2" in-between the ears.A base or block of wood that is 6" W x 6" L x 2" - 3" thick can be used under the bag for additional height.