Silicon fabric . This rechargeable night light features a 15-minute timer and tap-on technology. No batteries are required. Once fully charged it will stay on for 24 hours, casting a soft glow around the room all night long.Cool to the touch, just pat the Ricemonster on the head and you can change between bright light, soft light and off settings. This sweet, softly glowing LED night light is the perfect companion for little ones at bedtime. sweet and cute Ricecarrot design.