These mini dog treats have a hard and twisted outer shell with a soft inner shell of real meat which dogs would love to chew on for hours. (bestpets.co)
The case comes in three layers: a hard inner shell with plastic screen protector, a silicon rubber outer skin and then a further outer hard case as well. (pocket-lint.com)
Designed with red and black nylon outer shell and black fleece inner shell, the coat is water resistant. (ethicalpet.com)