Say 'Hello' to the world's cutest and most comfortable menstrual cup. Made in New Zealand, Hello Cups are hypoallergenic and will last at least 5 years. They hold three times more than a tampon and can be worn for up to 12 hours. Perfect for wearing while swimming, sleeping or busting out some 80's dance moves. The S/M is our 'one size fits most' cup. Perfect for those under 35 and fit users. The diameter is 41mm and the overall length, including the toggle, is 59mm. It holds 21mls (to the holes).