Keep Your Drink Hot or Cold This coffee mug is made of high-quality double-walled stainless steel, keeping your drink warm for up to 12 hours. The interior of this insulated coffee mug is made of food grade 304 stainless steel, ensuring it is rust-free, odorless and lead-free. The lid is made of food-grade silica gel, which is durable and BPA-free, ensuring your drink stays fresh and odor-free.EASY ONE-HANDED DRINKING The travel coffee mug features an eco-friendly flip-top opening, allowing for easy one-handed drinking. The lid also features a straw hole design, allowing you to drink directly from the cup or use a straw. The portable sling makes it easy to carry.Leakproof and Safe Designed with a screw-on lid, this coffee mug can be safely clicked into the closed position. The travel cup can be rotated at any angle without fear of overflow or causing leakage in your travel bag or desk. Just bring your drink!Innovative Design The cup lid has a backlit temperature reminder, allowing you to know the temperature of the coffee in the cup at any time. The bottom of the coffee cup has a rubber pad, which prevents slipping and protects furniture from scratches and debris.Excellent performance for any occasion With a 400ml/13.5oz capacity, this portable travel mug is perfect for on-the-go. Lightweight even when full, making it perfect for everyday life and outdoor adventures. Fits most car cup holders, suitable for home, office, camping, travel, beach, hiking, sports, picnics and any other activities you can imagine. This coffee mug is also an ideal choice for business and family gifts.