Where to Buy
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Here's what other sites are saying:
Take a big drink from your water bottle without splashing or spilling. Plastic insert fits into the opening of wide-mouth water bottles and reduces the size of the drinking hole. Easily removed for cleaning. Dishwasher safe. Imported. Please note: Fits only Nalgene brand 32 oz. Wide-Mouth bottles.
Nalgene Water Bottle Sleeve
$8 - $10
Nalgene Water Bottle Sleeve with Handle
Nalgene Insulated Water Bottle Sleeve
Guyot Designs SplashGuard
Platypus Bite Valve Cover
$4 - $5
Hydro Flask Standard Mouth Loop Cap
Platypus Bite Valve and Drink Tube Insulator Kit
$10 - $19
CamelBak Fresh Reservoir Filter