Little Trees CTK-52231-24 Vent Wrap Black Ice (4-Pack), 16 LITTLE TREES Black Ice Vent Wrap auto air freshener has a mysteriously enticing masculine blend of citrus and woods With 2 weeks of steady fragrance per Vent Wrap, a 4-pack delivers up to 60 days of fragrance. All of our LITTLE TREES Vent Wrap auto air fresheners are made in the USA with high-quality, strong and long-lasting fragrances. LITTLE TREES Black Ice Vent Wrap is invisibly Fresh! LITTLE TREES are the original automotive air freshener!