Check the listing for details. Electric Heating Pads For Muscle Cramps Back Neck Heating Pad Pain Relief 24x33". Color: Blue, Condition: New. Listed at 39.99 USD. About this item24"x 33"Extra-Large Size Back Heating Pad for Back Pain.6 Heat Settings & 3 Timing Settings.Soft Ultra-Soft Flannel Material to touch and comfortable to wear.Maintain its beauty and softness for years by machine washing on the gentle cycle.Fast Heating & ETL Safety Certified.Snap fasteners, weighted edges and fixture straps free your hands.A great gift for friends, family, as well as yourself. Specification:1. Brand: idoo2. Heating wire: NTC+PTC3. Heating element power: US-80W (short); US-85W (long)4. Material: crystal ultra-soft 220g; engineering ABS plastic;5. Color: dark blue;6. Power supply: AC120V/60Hz US plug7. Maximum temperature: 140 degrees Fahrenheit (60 degrees Celsius)8. Time setting: 1-1.5-2auto-off, default 2 hours after power on9. Temperature adjustment: 1-2-3-4-5-6 gear adjustment; temperature range: 43, 48, 52, 56, 61, 65, +5℃10. Power cord length: AC to controller: 1.8M +30mm/-0, controller to blanket: 0.7M +20mm/-0;11. Total heating pad size: 24x33"inches (long)