Plastic transparent window: Small flowers and insects can be collected for observation. Smooth surface without burrIt wont hurt your child's hand. Manufacturered by IAMGlobal. Size of Handle for children Easy to grasp. Twist the focusing screw to ensure that the small insect is in the focal length so as to see the part of the small insect more clearly High quality lens: The insects in the collector can be clearly seen through the eyepiece.