Sailor Soul Beverage Glass - Set of 6 The Sailor Soul beverage glass is made of MS, a top quality, shock-proof and break resistant material that is also difficult to scratch. Size: 6" H/3" Dia. COMPOSITION: 60% Acrylic + 40% Polystyrene (MS) INSTRUCTIONS: Not suitable for drinks with a high alcoholic content or very hot drinks. Do not microwave. MAINTENANCE AND CLEANING: This product is dishwasher resistant (top rack only). However, it is advisable to wash it by hand, gently and with neutral soap in order to maintain the transparency.