The following boss bags can be used with the ME-50;
LARGE BOSS BAG (BOSS BAG L)
ME-10/ME-6 BAG (RAM-2057US)
http://www.rolandus.com/superstore/roadgear2.asp
LARGE BOSS BAG (BOSS BAG L)
ME-10/ME-6 BAG (RAM-2057US)
http://www.rolandus.com/superstore/roadgear2.asp