[CRYSTAL CLEAR STRUCTURES] Each slide undergoes dyeing treatment for clear and vivid views. The parts and organs are distinctly colored and uniform. [RIGOROUSLY TESTED] Professional testing ensures slices for precise observations. [PREMIUM MATERIALS] Made of clean and translucent optical glass for optimal clarity. [USER-FRIENDLY DESIGN] Polished edges for safe handling during use. [DURABLE STORAGE] Comes in a sturdy plastic box with shockproof sponge for slide protection.