It is blue silicone rubber construction with smooth wipe down finish. Temperature range -60C to 250C. Thickness = 5mm with four mesh layers. It is excellent resistance to UV, water, ozone and oxygen. Reinforcement is made with Polyester to enable high pressure than original rubber hose does. Ask for one free sample ! Please Sign-in at http://performance.carparts.com.hk/register.php and send us an e-mail ( ) for a sample request. ( No need sign in if you have done before ) Product Specifications: - Material : Silicone Rubber - Working Temp. : -60 ~ 250 Degree - Thickness : 5mm , 4 Mesh layers to enable high temperature application - Color: Standard Blue , or Red