The SpectrashellTM Passport Case from Lavigne LabsTM is water-resistant, designed to protect your passport from physical damage and accidental exposure to liquid. It's made of strong ABS plastic and will hold up to lots of abuse.
A single passport, up to 46 pages will fit inside. A standard U.S. passport is 28 pages. A non-standard 52 page U.S. passport won't fit. The global standard passport size is 125 × 88 mm (4¹⁵⁄₁₆ × 3⁷⁄₁₆").
If you have a passport issued before 2014, measure carefully.
WATERPROOF OR WATER RESISTANT?
The Spectrashell Passport CaseTM is water-resistant but not waterproof. If you're going swimming, don't take your passport with you.
That being said, every effort has been made to protect your passport from storms, spills and puddle drops. If you close the case properly, your passport should be well protected.
Don't push your luck, treat your passport as the precious cargo it is.