• Keeps liquids in Nalgene Wide-Mouth bottles from spilling
• Easy to refill and seal bottle while Easy Sipper is inplace
• Press fits into all 63 mm Nalgene bottles
• Keeps liquids in Nalgene Wide-Mouth bottles from spilling • Easy to refill and seal bottle while Easy Sipper is inplace • Press fits into all 63 mm Nalgene bottles
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