It's very important for us to protect and pay attention to the eyes. The Vision testing is made from PVC material, this is waterproof, non-reflective and without pungent smell. Suitable for reading from 3.8 meters or 5 meters. Applicable to home, school, and small hospitals. Features - ColorAssorted Color - Material: PVC. - Size: 75.00X25.00X1.00cm/29.48X9.82X0.39in. - Note: telescopic rod is random color. - Made from PVC material with clear printing, it is a premium and hard to wear. - The set includes a telescopic rod and an occluder, very easy and convenient to use. - The assists in measuring visual acuity at a distance of 3.8-meter to 5-meter from viewer. - The standard is suitable for home, school, or some small hospitals to use. - The C-type for physical examination has an very accurate testing result. Package list: 1 x visual testing 1 x occluder 1 x telescopic rod