Product Benefits: Closeable straw lid Insulated cap TempShield®? double-wall vacuum insulation keeps beverages cold up to 24 hours and hot up to 12 hours Durable 18/8 Pro-Grade Stainless Steel construction BPA-Free and Phthalate-Free Dishwasher safe Please note that the Wide Mouth Straw Lid is not leakproof and is not intended for use with hot liquids Compatible with all Wide Mouth Caps and Lids Lifetime Warranty