Infuse some fun and relaxation into your studying with stackable, mix & match highlighters in six delightful colors and scents. Highlighters click into each other in any order so you can switch between colors at any point! Each highlighter has a unique, invigorating scent created from Lifelines Essential Oil Blends, ranging from wild mint and vanilla to lavender and chamomile. The beautiful aroma and fun, interactive stacking makes studying calming and enjoyable.