EASY TO USE:Straw lid with handle fits your hydroflask 18 oz 21 oz 24 oz standard mouth perfectly, easy to drink from straw mouthpiece, easy to carry with handle. Push the mouthpiece back and close the lid tightly. Solid standard mouth sports cap is a must-have replacement lid for Hydroflask standard mouth, meet your daily hydration on the go. COMPATIBLE WITH HYDRO FLASK STANDARD MOUTH:Straw lid for hydroflask 18 21 24 oz standard mouth. Straw lid also fits Simple Modern Ascent Water Bottle, the Coldest Water Standard Mouth, Klean Kanteen Classic Bottle. REMIND: Compatibility based on both water bottle brand and bottle size. ONLY for Hydroflask STANDARD MOUTH (mouth diameter 1.91 inches). NOT for wide mouth. Not for every water bottle brand. COMPATIBLE WITH HYDRO FLASK STANDARD MOUTH: Straw lid for hydroflask 18 21 24 oz standard mouth. Straw lid also fits Simple Modern Ascent Water Bottle, the Coldest Water Standard Mouth, Klean Kanteen Classic Bottle. REMIND: Compatibility based on both water bottle brand and bottle size. ONLY for Hydroflask STANDARD MOUTH (mouth diameter 1.91 inches). NOT for wide mouth. Not for every water bottle brand. GOOD PURCHASE Comes with 2 straws and 1 straw cleaner. Great straw cap for hydroflask standard mouth, straw lid with straws for hydroflask 18oz 21oz 24oz standard mouth. Easily trim LONG STRAWS to fit your standard mouth hydroflask. LID IN HIGH STANDARDStraw lid for hydro flask standard mouth,lid is made in premium quality.