Astm d1056 2a; mil spec: mil-c-3133c and mil-std-670b. Finish: textured. Firmness: extra soft. Material type: neoprene/epdm/sbr foam rubber.
色:Black both sides
Hms16-1968 mfr ref 1st material response and mil-c-3133c mil spec 2nd material response
色:Orange both sides and red both sides
Hms16-1968 mfr ref 1st material response and mil-c-3133c mil spec 2nd material response