Features: STANDARD REAR BAG: FOR USE WITH THE 4" CENTER POST ON THE ROCK AND OTHER SIMILAR RESTS COMPLIMENTS FRONT REST CONSTRUCTED OF HEAVY DUTY CORDURA AND LEATHER HIGH-QUALITY LEATHER AND POLYESTER REAR SHOOTING BAGS FUNCTION WITH MOST BRANDS OF FRONT RESTS. THE LEATHER GIVES YOU A SECURE REST AND THE POLYESTER, WHICH WILL NOT STRETCH OR SAG, ALLOWS THE BAG TO HOLD ITS SHAPE.