LifeSky Insulated Travel Coffee Mug, Stainless Steel (16 oz), BPA-Free , Lid Lock (Dark Gray) - Retains Temperature For Up To 8 Hours: Vacuum-seal technology and double-wall construction ensure superior insulation for hot or cold liquids. - Truly Leakproof: Will not leak! The only mug with a vertical lid lock. Ensures no accidental spills and allows for convenient 1-hand operation. - Safe & Nontoxic: BPA-free lid and food-grade stainless steel mean there are no chemicals that can leech into contents. Drink with peace of mind. - Slim & Sleek: Fits most car cup holders (2.6" D, 9" H), with a fingerprint-proof finish. Comes in purple, blue, champagne and dark grey. - 1-Year Warranty: Buy without risk! If you have any issues with our travel mug within 12 months, we'll replace it at no cost.