The Dyn-A-Med 62706 microscope slide mailer is made of plastic for durability and holds five, 25 x 75mm (1 x 3") microscope slides (sold separately). The top opens for slide access. It has a slotted interior to hold the slides securely apart and a tight-fitting end snap closure to help protect slides from shock and damage.
Dyn-A-Med distributes laboratory supplies. The company, founded in 1971, is headquartered in Escondido, CA.