Reditainer - 12 Ounce Insulated Supreme Hot/Cold Beverage Glasses - High Quality Drinkware (Set of 4 - Insulated Glasses - GREAT DEAL!) Reditainer - 12 Ounce Insulated Supreme Hot/Cold Beverage Glasses - High Quality Drinkware Set of 4 - Insulated Glasses Made of Special Eastman Tritan Plastic - Very Durable Sliding Lock Lid - Closes Tightly Perfect for Hot or Cold Beverages