... Neoprene is a Synthetic rubber foaming body,and commoned SBR,Diving materials,It's soft,elastic,waterproof,shockproof features. Neoprene is ... a Synthetic rubber foaming body, and commoned called SBR,CR,Diving materials in mainland China; and feel soft,elastic,waterproof,shockproof ... : 1)CR grade: 100%CR, mostly used for surfacing suit, Diving suit. 2)SC grade: 50%CR+50%SBR, mostly used ...