This glass is made from a food-safe BPA free polymer which reflects a wine's color and projects its aromatics much like crystal. The unique ergonomic thumb-notch makes wine swirling most simple. Best of all... 

• It is shatterproof
• Reusable 
• Recyclable. 
• It is picnic perfect. 
• It is light weight
• It is made to swirl - nice especially with the thumb-notch (depression) for firm hold.
• Unbreakable! If you break glass like i do, this is the next best thing to a real wine glass!
• Good for outside. This are very nice for picnic.

Care Instruction: To keep your wine glass lustrous, we recommend hand washing it.