How to Install:- Wipe the cap and bottom of the bottle with a wet cloth and dry- Put the bottle boot on the table- Insert the bottle slowly into the bottle boot- Press the silicone sleeve to squeeze out the air- Pull on the side to adjust appearance of bottle bootSilicone Boot Compatible (not limited to):- Compatible with YETI Rambler Bottle 64oz water bottle bootNote:- Protective water bottle bottom sleeve only others are not included.