Thank you for viewing. This is the Cogit, cooloop ice neck ring. It has a glacier-like design color, making it visually cool. Uses NASA-developed special PCM material. For measures against the intense heat. Suitable size: Inner circumference 32cm Size: 14 x 15.5 x thickness 2.5cm Freezing time (approx.): Natural freezing (below 28°C) / 3 hours, cold water / 30 minutes, refrigerator / 35 minutes, freezer / 10 minutes * Varies depending on the environment. Country of origin: Korea New Unused A neck cooler perfect for summer heat対策, with a cooling effect of about 2 hours. - Brand: COOLOOP - Color: Blue - Size: 2.5cm - Type: Neck cooler - Usage time: About 2 hours