Specification:
Color: as shown in the picture
Material: silicone, stainless steel
Product Size: bite valve: 5.4x3.7cm/2.13x1.46in, bottom: 1.5cm/0.59in

Package details:
12 x bite valves
1 x straw brush

Note:
Due to manual measurement, the size and weight may have a certain error.
Due to the difference between different monitors, there may be a slight color difference existed.
Package Content: You will receive 12 replacement bite valves in 4 vibrant colors and 1 straw cleaning brush. A practical and colorful solution to meet your replacement needs.
Compatibility: Specifically designed for Zak Designs Kelso 15oz water bottles, ensuring a secure and leak-resistant fit every time. Please note that our product is not sponsored or endorsed by, or affiliated with, the brands it fits, including Zak.
Reliable Material: Crafted from premium, BPA-free silicone, these bite valves are heat-resistant, reusable, and built to withstand daily use without cracking or leaking.
Tool-Free Installation: No tools required. Just remove the old valve and pop in a new one—quick, hassle-free, and perfect for families or individuals on the go.
Strong Practicality: Replace worn or damaged mouthpieces easily to prevent leaks and extend the life of your water bottle—no need for a full replacement.