20 oz vacuumed sealed, double walled stainless steel tumbler for hot or cold beverages.  Each resin crystal lattice encased tumbler includes a 100% food grade slider lid and straw packaged in an attractive black velvet gift bag.  Over 5000 crystals cover the tumblers. Easy Grip. Clear non toxic BPA Slider lid with stainless steel straw. Shatter Proof and sweat proof. Hot and Cold beverages.  Holds temperature for hours.