This is a set of two S-size cool rings for children. Although it's a child size, it should fit women as well. Of course, it's for heatstroke prevention, but it can also be used when a child has a fever and dislikes ice packs or cooling pads. You can use them for a long time if you use them alternately, so having two is recommended (^o^) Great for siblings too! The lemon and strawberry + watermelon patterns are very cute (*^^*) Perfect for Golden Week trips, returning home, sports festivals, athletic meets, games, club activities, walks, etc. ★ No pets, no smokers. Can ship the same day if it's not nighttime. We aim to ship within 24 hours. Thank you (*^^*)