The Heathrow Scientific HD15983A microscope slide mailer holds two slides, with or without cover glass. The mailer is made of polypropylene for durability and holds 25 x 75mm (1 x 3") microscope slides (sold separately) for transport. Colors include red, yellow, blue, purple, and orange. A tight-fitting snap closure helps protect slides from shock and damage.

Heathrow Scientific manufactures lab supplies and instruments for the research, clinical, safety, and industrial applications. The company, founded in 1996, is headquartered in Vernon Hills, IL.