What's inside our Smelly Balls Set? - Wool air freshener balls - Fragrance Oil 5ml (0.17 fl oz) - postcard - Instructions on how to use our Smelly Balls Our Shimmer Smelly Balls are inspired by the harmonious fusion of the beachy wonders found in sand, ocean waves, and the shimmering sunlight. Each set includes four unscented felt balls with a charm and elastic string, making them easy to hang in your car and a 0.17 fl oz bottle of our new Sunbeam fragrance oil, which is a blend of blissful bamboo, coconut water, and lively lime that captures carefree afternoons. From fields of orange flowers to grounded notes of vetiver, cedar, and vanilla, it’s your instant getaway to a sunny state of mind. Simply add a few drops of the fragrance oil onto the felt balls (excluding the lighter colours). When your air freshener needs a little boost, just whip out the fragrance oil and top it up.