Create an observation playground in your classroom with a self-contained space for study and discovery! Sturdy, 5-piece plywood system includes acrylic magnifier, plant and grow unit, touch and see unit with clear acrylic panel and mystery opening, habitat unit with sliding acrylic panels, and mobile base with casters. Unites (with built-in handles). Materials: Birch Ply, Hard Maple, acrylic, plastic. Each Unit Measures: 15 x 10 x 8.5 - Base Measures: 18 x 12 x 3 - 38lbs total