Features: Safe Material: high transparent acrylic material harmless no stain scratch and any bacteria. Because the microscope slides have smooth edges there is no risk of sharp injuries on the fingers. Clear observation: Fresh materials were used the thickness of sections was uniform the boundary of cells and tissues was clear the tissues and organs were stained clearly clear and uniform and the section staining was in sharp contrast. Easy to sort and collect permanent storage moisture-proof. Learning Knowledge: Dome light and the light at the end of stereoscopic microscope can provide a clean clear dyeing best good microscopic images. Cell tissue slides will irritate young children and slides with insect parts will be more interesting for them. Perfect gift: An exquisite collection of slides gift wrapping and an excellent gift for a young family member who is just starting out on a biology course. After-service: If you have any questions after receiving the product please feel free to contact us and we will provide you with a satisfactory answer. Specification: Material: Acrylic Packing size: 14*8.8*2cm Packing weight: 40g includes: 12 * Kid Prepared Microscope Slides "