The wide mouth spout lid fits :
Hydro Flask 12,16,18,20,32,40,64 oz WIDE mouth water bottles.
Simple Modern 10,12,14,18,22,32,40,64 oz WIDE mouth water bottles.
Takeya 14,18,24,32,40,64 oz and most brand-name WIDE mouth bottles.
NOT fits TAL, YETI, RTIC, Manna, Hydraflow, Hydrapeak Round Bottom, Beer Cup, Growler, Tumbler.
NOT fits Standard Mouth / Narrow Mouth Water Bottle.