Sio Dual-Wall Borosilicate Glass Tumblers, Set of 4

Temperature-Preserving Glasses Crafted for the Modern Table

The Sio Dual-Wall Glass Tumbler is engineered to elevate every sip. Its innovative dual-wall borosilicate construction maintains your beverage's temperature longer — keeping cold drinks cold and warm drinks warm — while the outer surface stays comfortable to hold. As a bonus, the transparent double layer creates a stunning floating-liquid effect that makes every pour a visual moment.

Designed as the perfect companion to the Sio Cold Infusion Pitcher, these glasses bring cohesive, spa-inspired style to your table. Each glass is individually hand-crafted by skilled artisan glassblowers using fine-quality borosilicate glass — a material prized for its clarity, durability, and thermal resistance.

• Maintains beverage temperature longer than single-wall glass
• Comfortable to hold — no heat or cold transfer to the outer surface
• Stunning floating-liquid visual effect
• Hand-crafted by artisan glassblowers
• Pairs seamlessly with the Sio Cold Infusion Pitcher
• Versatile design suits any modern tabletop setting

Product Specifications

• Includes: Set of 4 glasses
• Material: Fine borosilicate glass
• Color: Blueish gradient
• Volume: 8 fl oz / 236 mL per glass
• Construction: Dual-wall, hand-crafted

Care Instructions

• Hand wash recommended to preserve clarity and dual-wall integrity
• Do not use abrasive scrubbers or harsh detergents
• Not recommended for microwave use
• Handle with care — borosilicate glass is durable but not unbreakable