Features:- Keep your travels smooth and your style cool with the Sierra Collection. Classic Corkcicle silhouettes are now available in hues inspired by nature, designed for adventure, and made to last.- Triple insulated.- Wide mouth for ice cubes.- Easy grip flat sides.- Non-slip silicone bottom.- Sliding, shatter-proof lid.- Cup-holder Friendly.- Monochromatic Tumblers feature new tougher-than-ever finish.