8 ounce Bell Habitat Bottle is molded in break-age resistant rigid styrene plastic in brilliant colors. Designed to fit the molded-inholders fondon today's plastic hamster cagesthe botle design retains vacuum for excellent water retention. Fits into the molded circular opening in the top of most plastic carrying tote type cages for pocket pets. Looks good and works very well when combined as a mix-or-match color with today's popular plastic pet carriers. Features stainless steel Ball-Point Tip drinking tube unit. Complete with black rubber O-type retainer ring. Available in assorted colors that compiment today's plastic environment pet-homes.