Onyx Smelly Balls, keep it chic and classy no matter which vibe you’re going for! Black never goes out of style, which is why Onyx is one of our most popular set of balls. It's also a great choice for men! 4 Unscented Felt Balls with branded charm and elastic string for easy hanging. 5mL Fragrance Oil of your choice. Comes with instructions and bonus postcard, together in our little ‘keep pouch’ which can be used to store your little treasures later!