The Tracker Rear Bag is a great all around rear bag designed to shoot ranges from 200 yards to 1,000 yards. It was originally designed to use with the Shehane Tracker ST1000 stock but works well with many other benchrest stocks. What makes this bag unique is the bottom angles inwards from 7-1/2" - 4" to make it easier to reach around the bag. It is 4" tall to the bottom of the ears and is competely flat across the top. The bag has a bottom comprised of 3 layers of stiff leather with an integral doughnut that eliminates any rocking movement. The sidewalls have stiffer leather than most bags, which prevents "rounding" of the bag over time. The standard spacing for the Tracker Bag is .700/1000 but can be easily changed to fit other stocks. This is an incredibly stable bag that will provide years of service. Bag base size measure 5-1/2" x 7-1/2" and narrows to 4".Weight 7 lbs. with Regular Sand and 13 lbs. with Heavy Sand. Made in USA 100%.