ORGANIC Weighted Sleep Mask Eye Pillow Lavender & Flax (mix) with Washable Cover and removable inner bag. Adjustable elastic to keep in place. Provides you with total darkness to assist your transition into a deeper sleep faster & naturally while aiding in REM sleep which is the most crucial part of the sleep cycle. ALL-NATURAL lavender blossoms have been proven for centuries to enhance your ability to relax and fall asleep quicker and deeper, as well as aid in the prevention of headaches with adjustable elastic. Hand Made Sleep Mask by SleepingOwl. Black - cotton Back side of sleep mask is made from black cotton fabric for best comfort and 100% blocking light. Use for: Relaxation: aromatherapy from the scent of Lavender flowers (for scented Bags) Stress Relief: soothing light pressure from the weighted Flaxseed Heat Pack: heat Bag (remove from cover) in microwave for 30 seconds to help soothe headaches and swollen sinuses Cold Pack: put in freezer for 30 minutes to make a cold compress for puffy eyes Size for Cover (mask) 22cm x 12cm (8.6" x 4.7") Sleep masks, absolutely great, have more features than helping you sleeping during morning or day if you working in a night shift. I have realized that they are also easy handy when traveling, actually if you are traveling across the time zones. SleepingOwl mask have a unique shape and size blocks out ambient light.