Specifications:

Large gray 28*20*3.5

Large blue 28*20 *.35

Large black 28*20*3.5

Large red 28*20*3.5

Small size gray 24*16.5*3.5

Small size Blue 24*16.5*3.5

Small size Black 24*16.5*3.5

Small size Red 24*16.5*3.5