Our car diffusers are made with a thick air freshener paper to help make your freshener last longer. They're approx 4 inches at the longest length. Scent Descriptions: Shoreline: A salty ocean breeze with a hint of mystique. Cardamom and orange peel top notes balance a rich heart of sea salt resting on an aquatic base of palm, light musk, and amber. Black Coconut: A powerful, sultry fragrance notes of coconut and pineapple and also touches of musky cedarwood which is incredibly warm and inviting. Guava: Blend of sweet exotic fruits and light undertones of warm vanilla complete this fragrant accord. Passionfruit: Sweet and tart, Passionfruit Pineapple is a vibrant citrus explosion to the senses. Pineapple, peach, and tangy grapefruit top notes merge with tropical passionfruit, mango, and coconut. Notes of zesty lemongrass and musk round out this fruity scent.