Leak‑Proof, Spill‑Resistant Sipping: Bite valves are designed to seal securely after each sip to help reduce messes at school, in the car, or on the go
Designed for Legacy CamelBak Systems: Compatible with pre 2019 ThermoBak 3L systems and select CamelBak packs, including M.U.L.E., H.A.W.G., Motherlode, and BFM