... ,the more detailes please see the following: Color:Red,blue,Green,Yellow Material :coat is antiskid grassmat coat ,upper layer inner is ... layer inner is PE,the thickness is 4-6cm ,the material of bottom is antiskid rubber . it is compound of 1mx2m ... standard judo place is 14mx14m ,18 pcs red and 80pcs green antiskid professional EVA judo mat/tatami mat