Designed to Fit All Head Sizes, Its Flexible & Durable Construction Ensures a Snug Fit Without Catching Your Hair. the High-elastic Strap is Easily Adjustable, Enhancing Comfort & Preventing Hair Entanglement. the Ergonomic Eye Mask, with Deeper Contours Around the Eyes, Allows Unrestricted Eye Movement. Crafted From Light, Breathable Materials & Smooth Fabric, It Alleviates Facial Stress, Promoting Rapid Sleep Onset. Sturdier Than Traditional Blindfolds, Our Mask Features High-quality Sponge Material That is Deformable, Odor-free, & Gentle on the Skin, Enhancing the Desire for Restful Sleep. Effectively Blocking Out Light, Its Perfect for Meditation, Yoga, Travel, Napping, & Managing Insomnia. Dimensions. 4.13 Inch x 8.5 Inch.