There may be individual differences in how it feels cold. This product cannot be used like an ice pack. Colors may vary depending on how you freeze, individual differences in freeze. While some of the main unit may dent when frozen, it is a product specification and does not affect use. If the product has been damaged, stop using it immediately. If the liquid gets stuck to it, rinse with water. If you experience any abnormalities such as rashes or rashes due to liquid adhesion, please consult a physician. There may be small scratches, dirt, dents, etc. on the product or package. Please be aware of Depending on your monitor settings, the color of the actual product may differ from the images. Depending on the production date, the design and specifications may vary slightly. Please be aware of Size L: Height: Approx. 7.0 inches (17.7 cm), Width: Approx. 6.2 inches (15.7 cm), Neck Circumference: Approx. 15.4 inches (39.0 cm), Weight: Approx. 4.9 oz (140 g), Thickness: Approx. 0.8 inches (20 mm), Weight: Approx. 4.9 oz (10 g), Thickness: 0.8 inches (20 mm) ± mm) ± inches (5 mm). Country of Origin: China.