forever piece
n.—Gloss: a clothing or personal accessory that is well-crafted and expensive. «After a couple of weeks of happily wearing my new purchases—the quality is so sublime, just donning one of these garments makes you feel rich and privileged—I decided to splurge on a coveted Wolford ribbed turtleneck in charcoal grey. Price tag: $672 (including tax). It is what’s referred to as a “forever piece “—and one that I knew I’d wear like crazy.» —“The lure of luxury lingerie (and sweaters, too)” by Jeanne Beker Globe and Mail (Toronto, Canada) Nov. 10, 2007. (source: Double-Tongued Dictionary)