3 years & up. Bring learning outdoors with these exciting Big View Bug Observation Jars for Science Lessons and Outdoor Learning. These adorable jars have ladybug wings that open to invite little learners to investigate insects. The wings open to reveal a 3.5x magnifying lens. Children will enjoy collecting bugs outside and observing them. Encourage them to describe or write about the bugs they catch. The screw-on cap and air vents keep specimens secure. Set of 6. Measures 4.5" H x 3.5" in diameter.