Forum The Forum collection of cups is Arcoroc’s functional answer for the public sector. The Forum’s emblematic unhooking guarantees perfect stackability of the cups to save space. Made of tempered glass, the 26.5cl, 23cl and 16cl cups are resistant to mechanical and thermal shocks. The diameter of the Forum cups is designed for an ergonomic grip for the youngest users and the seniors. Forum cups are perfect for serving water on trays in school, company or hospital canteens. The conical shape of the cups makes them easy to wash in an industrial dishwasher.