These are water bottle caps, made of . Good sealing effect protection against spillage. Simple and reasonable design and it is in fine craftsmanship. It is the best replacement caps for your old, broken caps. These bottle replacement caps can be used many times, reusable and useful, and reliable. Features -Color:Black -Material:Pp -Size:7.00X6.50X3.00cm/2.75X2.55X1.18in - Stable and practical, these water bottle caps have , excellent and useful, universal and reliable for home use. - Wide application, these water bottle caps are multi-functional and practical, perfect and suitable for water bottle, drinking bottles. - These water bottle caps have good sealing effect to that the water will not splashing, leak or spill. - Made of selected plastic material, these water bottle caps are healthy, excellent and , lasting service life. - Simple and modern design, easy to tighten, very practical and convenient for sport water bottles use. Package list: 2 bottle ​caps