LIghtbridge C-Diff 15 Kit 4Panels Speedbag in heavy duty Cordura + Neoprene Sleeves The C-Diff 15×15 comes with a heavy duty Speedbag! Hang the Speedbag on your stand like a scrim bag for fast exchanges and keeping the C-Reflectors safe. 15 x 15 cm 4 x Cine Reflectors in heavy duty Speedbag + Neoprene Sleeves