4pcs Replacement Bite Valve for Zak Designs Kelso 15oz Water Bottle, Durable Silicone Mouthpiece Straw Tips BPA-Free Cup Accessories for Zak Kids Straw Bottles (Gray)

["Complete Replacement Kit: Includes 4 bite valves, ideal for backups, sharing, or rotating replacements to maintain cleanliness and performance.","Premium & Durable Materials: Our bite valves are made of BPA-free silicone, ensuring friendly for kids and durable for daily use.","Perfect Fit & Leak-Proof: Designed specifically for Zak Designs Kelso 15 oz bottles, these valves ensure a snug, leak-free seal. (Please note that our product is not sponsored or endorsed by, or affiliated with the brands it fits, including Zak.)","Easy Cleaning & Maintenance: Rinse with water or use brushes (not included) for thorough cleaning. Keep straws fresh after school, sports, or outings with minimal effort.","Easy Installation: Simply detach the old valve and snap in the new one-no tools needed. Replacing just the valve instead of the entire bottle!"]