Size S: 0-13 pounds, Size M: 13-27 pounds, Size L: 27-38 pounds. Ample quantity: the package contains 2 pairs of thumb sucking guards in pink, 4 pieces in total, providing sufficient supply for frequent changes and maintaining hygiene. Breathable and soft: made of mesh fabric, these baby thumb guards offer good breathability and softness, helping prevent hands from becoming sweaty. Both the fingertip and wrist areas are reinforced with fabric ing, enhancing durability and ensuring long-term use. Adjustable strap: equipped with a strap and plastic buckle, allowing adults to easily adjust the fit to secure the guard comfortably on a child's hand and help prevent it from falling off. Helps discourage thumb and finger sucking: designed to cover little hands, these guards can assist in reducing common habits like thumb sucking and nail biting. Easy to clean: can be sanitized by placing in boiling water for 30 seconds before first use. A practical solution to help keep fingers out of the mouth, making it a thoughtful gift for families with infants.