Confirmed fit
Kid's Classic insulated/non-insulated 12 oz
Klean Kanteen · Kid's Classic insulated/non-insulated
Check before buying: For Flip Seal Sport the factory straw length varies with bottle size; accessory kit provides telescoping straw. No TKWide or legacy Wide interface fit inferred.
Compatibility evidence details
Manufacturer official collection lists this kids-classic 12 oz bottle with its classic-sippy cap. For Flip Seal Sport the factory straw length varies with bottle size; accessory kit provides telescoping straw. No TKWide or legacy Wide interface fit inferred.