Caran d'Ache Special Edition Ecridor Ballpen & Leather Case Gift Set - Alpine FrostAbout the Caran d'Ache Ecridor Ballpen & Leather Case Gift Set Alpine Frost The Caran d'Ache Ecridor is a classic, luxury pen and the Alpine Frost edition is no exception. As the name suggests, it has a stunning frost pattern engraved on the pen barrel to symbolise the festive season. This luxurious gift set also includes a pale blue leather pen case, all included in a beautiful gift box.