BAITER Anti-noise Soundproof Earmuffs Earplugs Sleep Disturbances Headset for Sleep Study and Work Earmuff (Orange) Adjustable Headband Design:It can be adjusted to suit various sizes.Perfect for adults and kids. NRR Sound Technology:Our ear muff ensures NRR 28db for hearing protection. Eco-friendly Materials:Made with ABS headband which is eco-friendly and non-toxic materials. Lightweight and Easy to Store:It's a lightweight hearing protection.You can put it in your suitcase, backpack or any wherever you keep your ear muffs. Money-back Guarantee:Please feel free to contact us if there should be any questions.