1.rc caterpillar 2.Material:NBR foam 3.Durable,safety,anti-skidding 4.Color:black,blue,yellow 5.CE,ROHS, ... the material is non-tonix,eco-environment,soft,smooth,light,safety,Skid-resistant function,weatherproof,anti-shock,anticollision.This RC tire ... :NBR+PVC foam.Function:Suitable for toy car,bike,motorcycle,truck,babystroller.Durable,safety,wearproof,anti-shock,anti-skidding,anticollision,soft,light ...