[latest model] 2022 enhanced neck cooling cooler pro is now available for the first time The first three cooling plates, the performance and functions are completely improved and improved. Cold aluminum absorbs heat, aluminum blocks dissipate heat, and the physical cooling cools, so it's an item to enjoy the coolness of a hot day. [Cooling plate design, maximum -16 C] Adopts semiconductor refrigeration technology to form a temperature difference and exchange heat energy. The three aluminum cooling plates instantly convey the coldness to the skin in 2 seconds, and the temperature drops by up to -16 C from the outside temperature. When you hang it around your neck, you can immediately feel the coolness. It feels cold from around the neck. [Adjustable neck size] The neck size and angle can be adjusted, and it is a width fit specification from women to large men. The minimum neck size is about 350 mm and the maximum is about 450 mm. You can freely adjust the size of your choice. This product requires Connect to the power supply. Attention Please do not cover the wind holes at the two side of the device, which will effect the cooling function. [Wide range of uses] Summer festivals, outdoors, watching sports, walking, mountain climbing, excursions, festivals, commuting, school, etc. Material: Plastic + Aluminum colour: black Package Contents: 1 x Neck Refrigerator 1 x Power Cord Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.