Sleep Mask Solitude by Dream Essentials with Lavender Filled Sachet. Achieve a deeper night’s sleep with this sleep mask with lavender. Lavender flowers are held in a sachet that provides you with a gentle lavender fragrance as you start to fall asleep and while you sleep. The soothing fragrance helps to lull you into a deep sleep. Simply insert the sachet in the pocket on front of the mask. The sleeping mask is soft, 100% light blocking and has an adjustable Velcro strap.