Crafted from durable 18/8 stainless steel with a non-slip silicone base, it's dishwasher safe and free from harmful chemicals. Plus, it fits snugly in most cupholders, making it perfect for your daily commute or adventures. Double wall vacuum insulated to maintain temperature  Straw lid Non-slip silicone base  Fits most cupholders  Made from 18/8 Stainless Steel  Powder coat finish  Dishwasher safe  BPA, BPS, and BPF free  15 Hours Cold and 7 Hours Hot  _