... double hole silicone tube 1 High quality silicone. 2 Environmental 3 Eco-friendly,nontoxic 4 any size,color are available Specifications: Double hole silicone ... tube 1.Made of 100% Medical Silicone tube,can be used ... in flexibility Anti-aging, antiradiation. Material:100% silicone Feature avirulent insipidity CertificateCE,SGS Shape square, round, ...