Turn restless, overheated nights into cool, comfortable sleep with this rechargeable under-sheet bed cooling fan, designed to send refreshing airflow beneath your blanket exactly where you need it. Choose from five adjustable speed levels, from a gentle nighttime breeze to stronger cooling on hot summer evenings, then change the settings effortlessly with the included remote control without leaving your bed. The built-in 1 to 6-hour timer automatically switches the fan off, while the telescopic bracket adjusts from 22 to 53 cm to fit different bed and mattress heights. With a powerful 6000mAh or larger battery, compact ABS body, and cordless design, it keeps your sleeping space cool without messy wires or bulky equipment. Perfect for hot sleepers, couples, dorm rooms, guest rooms, or anyone who loves the comfort of sleeping under a blanket without waking up warm and uncomfortable.