Hydro Flask - Wide Mouth Flex Sip Lid. Color Black. Low Stock. On sale for $10.63. MSRP $12.50.. 3.6 out of 5 stars1 left in stockBrand NameHydro FlaskProduct NameWide Mouth Flex Sip LidColorBlackPrice$10.63MSRP: $12.50Rating4Rated 4 stars out of 5(524)