Libbey Gibraltar Rocks Glass, 26cl 9oz – Case Qty 12

Libbey – Gibraltar Original

Libbey’s original 8 sided tumbler glasses. The Gibraltar glasses are one of the best known tumbler glasses in the world. Its introduction starts in the seventies, 40 years later still one of Libbey’s best-selling items in the world. Perfect for showcasing everything from cocktails to beverages. This range features the Libbey Duratuff® toughening process for added durability.

DuraTuff®
Libbey’s DuraTuff® treatment is a super strengthening thermal after-process for “pressed” tumblers and stemware.

The DuraTuff® process is only performed on the upper third of the glass, which increases its resistance to thermal and mechanical shock. By treating this upper portion at a lower temperature than tempering, you put less stress on the glass. This has a positive effect on how the glass breaks and also improves its overall durability.