Not exactly a bag, but
http://www.amazon.com/Specimen-Cups-Lids-Oz-pkg/dp/B00BUOLO6Y/ref=sr_1_3?ie=UTF8&qid=1453503918&sr=8-3&keywords=urine+cups">Amazon.com: 1 X Specimen Cups With Lids 4 Oz 25/pkg: Industrial & Scientific@@AMEPARAM@@http://ecx.images-amazon.com/images/I/31r2AnSKbQL.@@AMEPARAM@@31r2AnSKbQL</a>
Specimen Cups.... they seem to work well for meetings and person to person sales. I've heard some complaints for shipping. The foam is a great idea.
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