The sports water bottle caps is manufactured with PE material, durable and practical for use. Perfectly for sealing water bottles for sports. Excellent and practical, excellent sealing effect, safe and reliable, it will bring you . Simple to replace, useful and excellent, easy to use, bring much convenience to your daily life. Features -Color:White -Material:PE -Size:3.50X3.00X3.00cm/1.38X1.18X1.18in -Inner diameter: 28mm/1.10in - This sports water bottle cap has good sealing effect to ensure that the water will not splashing, leak or spill. - Made of selected and safe PE material, healthy, excellent and durable, . - Simple and modern design, easy to tighten, very practical and convenient for bottles use. - Replace or missing lids and keep the when storing, simple to replace. - Good helper in your daily life, with this replacement caps, the in the water bottles can be protected. Package list: 25 x Bottle Caps