Feature: 1. PREMIUM FABRIC: heated eye mask is made of double sided silk cotton for a soft, skin friendly feel, moisturising and breathable. 2. MULTIPLE EFFICACY: Silk heated eye mask has an anti fatigue effect, brightens the eye area, reduces the appearance of lines and puffiness. 3. ADJUSTABLE STRAP: USB sleep heating eye mask with adjustable elastic band to reduce pressure on the ears and head. 4. TIMER CONTROL: The USB eye mask has a multi timer shut off function with three timer settings: 30 minutes, 45 minutes and 60 minutes. 5. TEMPERATURE CONTROL: USB eye mask with multi step temperature control, three levels of heating: 25℃, 35℃, 45℃. Specification: Item Type: Heated Eye Mask Material: Silk Wadding Size: Length: Approx. 21 cm/8.3in Width: Approx. 10 cm/3.9in. Package List: 1 x Eye Mask 1 x Charging Cable 1 x Manual Note: 1. Do not allow people who cannot take care of themselves, babies or people who are not sensitive enough to heat to use it.2. Do not scratch the heating cloth with a needle and knife, and use it strictly with electricity when no one is in the room.3. not to be used in wet conditions, please dry before use.4. High temperature, medium temperature, suitable for use with medicine packets (this price does not include medicine packets) heating, low temperature suitable for direct use against the skin.5. Manual measurement, there will be 1‑2cm/0.4‑0.8in error.