35 colorful prepared slides. You can accompany children to observe the magical biological world. It can cultivate children's interests in seeking knowledge. Features: 7 types of slides, including cell, vegetabless, tissue, insect wing, stem, insect leg and verfluent. Fine quality optical glass which is clear and transparent. The smooth edges can prevent fingers from being cut. Elastic sponge isolation make it safe and beautiful. Specifications: Slide quantity: 35pcs Type: cell, vegetables, tissue, insect wing, stem, verfluent, insect leg(all included) Material: glass Each case size: 8 * 2.9 * 1.8cm / 3.1 * 1.4 * 0.6in Each case weight: 34g / 1.2oz Each slide size: 7.6 * 2.5 * 0.1cm / 3 * 1 * 0.04in Each slide weight: 5g / 0.2oz Package size: 18 * 10.4 * 4.7cm / 7.1 * 4.1 * 1.8in Package weight: 395g / 13.9oz Package List: 35 * Prepared Microscope Slides 7 * Plastic Cases 1 * Box