Saddlemen Motorcycle Saddlebag Packing Cube Liner Set Part Number:M18 91139 (MFG #: 3501 0716) with snap button on the Part Number:1037 1930 (MFG #: 2152700054) with snap button on the back to ensure it remains fixed in position when riding The dual knee system with an outer layer made of full grain leather and an abrasion resistant inner layer offers optimal protection against external and internal stress and is compatible with orthoses and protectors thanks to its smart design Four piece liner set includes one full size liner bag matched perfectly to the shape of FLD style hard saddlebag plus one vertically oriented half size liner used in conjunction with two quarter sized horizontally oriented liner bags that stack neatly together in your other saddlebag Top sections of the quarter sized liner bags are transparent with double pull zippers so you can see the contents and get to them quickly perfect for items you need to grab when youre on the road