The Bucky Ultralight chevron sleep masks are a smaller version of our classic 40 blinks eye mask. Great for children and those with petite faces who want a good mask that molds to their face. Measuring 3. 25" Tall x 8" Wide our chevron eye masks are an inch smaller in length than the 40 blinks and have half the depth in the eye Cup. Light is the number one reason that people can't sleep. By blocking light The eye mask encourages natural melatonin production so that wearers sleep more deeply and for longer periods. The Bucky chevron mask is great compact travel companion while on a plane, train, or hotel. Get a restful night sleep wherever you are with a Bucky eye mask.