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. At the same time, we provide discount packages of 2 packs, . The above allows you to have a variety of purchase options. Perfect for that big event coming up such as grand opening, or birthday party. These bottles can also be great party favors, a gift to your favorite client, and more.HIGH QUALITY AND : 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 & KEEP WARM FOR A LONG TIME: Our double wall insulation bottle protects temperature for up to 12 hours . The 20 oz stainless steel water bottle is perfect for everyday use and the cups fit on the bike cup holder and inside the backpack - for your hiking, biking, beach, camping and fitness!