CAREFUL CUP LID DESIGN: After market research, we redesigned this cup lid. 1. The thickened version of the waterproof rubber ring is used to make the seal more secure. 2. The bottom of the lid is made of non-metallic material, which ensures that there is no Jarring metal noise when the lid is turned. 3. The handle of the lid can be rotated 180°,so that your hands will not be tired when you hold it for a long time. MULTI PACK AND MULTI COLOR OPTIONS: We provide you with more than 10 colors, including gradient colors and non-painted colors. At the same time, we provide packages of 2 packs, 4 packs and 8 packs. The above allows you to have a variety of purchase options. HIGH QUALITY AND CHEAP: The inner and outer layers of the cup body are made of premium quality 18/8 food grade stainless steel. The lid is made of Safe material that does not contain BPA and phthalate. Powder coating on the outside fits more comfortably in your hand, looks good, anti slip. PERFECT SIZE AND KEEP WARM