These white polypropylene slide mailers included hinged covers and nolded-in dividers to securely hold 3" x 1" microscope slides. Additional Info: Microscope Slide Mailer, Pp, 10 Slides, Pk/25 Package Size(L x W x H): 4.5 X 8.5 X 9 (IN) Categories: Microscopy, Slides & Storage HTS Code: 3926.90.9910 UNSPSC: 4.11226e+007 Country Of Origin: INDIA