The Contigo Snapseal Byron Stainless Steel Travel Mug, 20 oz, is designed for an easy, one handed drinking experience. All you need to do is pop the top to drink. There’s no lid to unscrew or remove—just make sure to snap it closed after you’re done sipping to seal the leak proof lid. However you prefer it, your coffee stays hot up to 7 hours or cold up to 18 thanks to Thermalock vacuum insulation.