This kids 's thumb protector does not contain fluorescent agent, the special fabric , not only is breathable, soft and elastic, the fingertips are covered with fluff to reduce friction. Protect your baby's delicate teeth.Your insistence to stop this bad habit of your child is the most important thing.In the first few days of wearing, some babies may cry or pull on the gloves. Please keep wearing them. After the first three days, your baby will get used to and willing to wear it.It takes 1-2 weeks to reduce sucking fingers, 2-3 months to quit the bad habit of sucking thumb and other finger gently and quickly. This kids's thumb protector does not distinguish between left and right, you can wear it on either side. At the beginning, the anti-eating gloves only have the sucking stop for kids, that is, if you wear them, you will not eat, and you will continue to eat if you don't wear them. It is recommended to wear it for 24 hours, and wear it for 2 weeks - 3 months until you quit. During stop thumb sucking for kids, do not let the baby eat hands again, so as to avoid rebound. Can't quit repeatedly.Please refer to the wearing method in the product ,Put the product on baby's hand, loosen or tighten the rope it according to your little one's hand. Please double over the strap after adjusting, then you can keep it from coming loose and keep your child from pulling it off. Please refer to the size chart in the product and make sure you choose the correct size before purchasing.It is recommended to wash by hand in warm water with laundry soap before use and purchase 2 sets of kids 's thumb sucking stop gloves to facilitate alternate use.If you have any questions, please feel free to contact us for a full refund or replacement.