This is a small size, for children! Strawberry & watermelon pattern. For children's heatstroke prevention!! [Small Size] Length: Approximately 110mm Width: Approximately 100mm Weight: 110g ± 10g Inner circumference: Approximately 31cm Antibacterial treatment ★ Registered inspection organization based on the Food Sanitation Act of the Ministry of Health, Labour and Welfare. Hazardous substances tested. - Freezes below 28 degrees Celsius and melts above 28 degrees Celsius. - It freezes even with water or the outside temperature if it is below 28 degrees Celsius. Cooling in a refrigerator or freezer will freeze it faster. - The outer material uses durable 0.3mm thick TPU material. Even in the hot summer season, the ring stays cool! A neck cooler for the neck made with "PCM material," a mysterious ice that freezes in spaces below 28 degrees Celsius. Recommended for efficiently cooling the carotid artery in the neck at a comfortable temperature! It doesn't get too cold like ice, so there's no risk of cold injury and it's gentle on the skin♪ Even if it melts once, it can be frozen again and used repeatedly just by placing it in a cool space with air conditioning! It freezes even faster by putting it in the freezer or soaking it in tap water, so it can be used for sudden outings. A design that fits around the neck and doesn't fall off easily. Recommended for those who move actively in sports, those who work outdoors, during commuting to school, fishing, doing housework, those who are concerned about hot flashes, activities in spaces without air conditioning, after taking a bath, or for a change of mood, and various other situations.