The Universal Rear Bag by Birchwood comes prefilled with corn cob media to allow for immediate use. It is constructed of polyester with leather top to create a solid and secure rest. The rest can be used on virtually any surface.
Specifications:

Description
Type of Bag	Rear Bag
Prefilled-Empty
Type of Feet
Cradle Blocks
Material	Polyester with Leather Top
Vertical Adjustment
Lockable Position
Weight
Adaptor Type
Dimensions
Attachment Type
Yoke Type
No. of Legs
Includes