It's a good fabric for babies. There's no fluorescent.

Quick drying fabric for easy cleaning

There is a rope to adjust the size of the cuff, exquisite workmanship.

S: Recommended age:6-18 months and weigh 6-10kg

M: Recommended age:15 months to 3 years old with a body weight of 9-15kg

L: Recommended age: 3-5 years old and weigh 15-22.5kg