The Original Mason Bottle Silicone Sleeve

Designed to fit 4 oz. and 8oz. regular-mouth mason jars. Protect your nipples! 

Extra features include sneaky windows through which to spy bottle contents and volume measurement in both millimeters and ounces. #fancy

Simple, brilliant, and just a little hip - The Mason Bottle can turn any mason jar into a bottle. You can store, heat, and serve milk in this streamlined and safe little bottle.

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