Fully lined with hidden side pockets and button closure. (1stdibs.com)
There are nine roomy pockets (six outside, including two hidden side zip pockets that fit your newest smart phone; and three pockets in the shell body). (territoryahead.com)
Phase I clinical trials of the man - made compounds have begun, but there's no guarantee they won't reveal hidden side effects or toxicity. (discovermagazine.com)