Open mesh polyester braiding incorporated within the wall of silicone silicone tubing Made from FDA-sanctioned ingredients Manufactured using FDA 21 CFR 177.2600 Translucent natural color for visual contact with the flow Able to resist extreme temperature variation: -80°F to 350°F Excellent weatherability properties -- resists U.V., ozone, gases, moisture, and extreme temperatures Offers far higher pressure capabilities than similarly-sized unreinforced silicone tubing Repeatedly autoclavable Translucent for visual flow.