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Wide-mouth opening with SlidelockTM closure is easy to refill and locks securely.
Low-profile design rides flat in your pack.
Taste-free and BPA-free for clean drinking.
Silver-ion antimicrobial keeps it fresh.
Quick-release hose and shutoff valve make drinking and refilling easy.
Platypus Big Zip LP Reservoir 3-Liter - B00F5IADN6