Heat up your tub without using the hot water. Each packet includes 5 oz. of bath salts and romantic suggestion cards. The card offer sexy fun and intimate ideas for ways that you and your lover can enjoy sharing a nice and warm tub together. The recommended usage amount is 1 ounce so there are enough bath salts for 5 baths or dips in the hot tub. The bath salts are hot tub safe so fun can be had in any size tub.