L size Inner diameter 12cm, thickness approximately 2cm, inner circumference approximately 36cm. Neck size guide: 30-39cm Design ice neck ring that fits around the neck and is difficult to fall off. Furthermore, it is lightweight and does not put a burden on the neck. ⚠️Photos on the website are for illustrative purposes only! 　Please be sure to check the actual product photos❣️ ⚠️To offer the product at a slightly lower price, due to shipping costs, the item may be shipped without the box. ⚠️Shipping method may be changed between Rakuraku (Easy) and Yuuyu (Yu-Yu), depending on packaging. 　Please understand. ⚠️If there are any issues, please contact us before leaving a review. #na_na_shop's product list is here ✨☜ 【Easy to use, long-lasting cooling】 This cool neck ring can be used simply by putting it around your neck. Also, the neck has a major artery, and cooling this area can cool the blood flowing throughout the body, effectively cooling the whole body and preventing heatstroke. 【Wide range of uses, reliable guarantee】 This cool neck ring is perfect for golf, jogging, fishing, cycling, camping, driving, watching sports, studying, the office, housework, and work sites. Ice neck ring, cool neck ring, 28℃, neck hanging, neck cooling, natural freezing, cool feeling, cooling, heatstroke prevention, heat measures, commuting, school, sports viewing, outdoor activities, fireworks displays, festivals, mountain climbing, unisex 35-14 009