amazon ale 380ml/510ml double stainless steel coffee thermos mug with non-slip case car vacuum flask travel insulated bottle water bottle wi

360 ° leak-proof
the cup mouth is made of food-grade silicone rubber ring with annular sealing mode. when water is filled, the sealing effect is still stable. how to shake or place it horizontally in the bag, the sealing effect is still stable and reliable. the cup cover is square inside and round outside, and it is comfortable to open and unscrew, simple and practical.it's easy to open the lid, light and easy, so you can enjoy a pleasant coffee time anytime and anywhere. the shell of the water cup is equipped with anti-slip silicone, which is comfortable to touch, anti-slip and anti-falling, and can be controlled stably when walking, driving and flying..syi