A unit of measurement equating to approximately 100 milliliters, 3.4 ounces is frequently encountered in the context of travel-sized toiletries and cosmetic products. This volume is dictated by aviation security regulations for liquids, aerosols, and gels carried in hand luggage. A common visual analogue would be a small travel-sized bottle of shampoo or lotion, typically packaged to adhere to these restrictions.
The significance of this quantity lies in its allowance for personal care items to be transported conveniently and compliantly on flights. This standard minimizes potential security risks while accommodating passengers’ essential needs. The historical context involves the establishment of security protocols following specific incidents, leading to the standardization of liquid volumes permitted in carry-on baggage.