Specifications: Wide application Our hat size reducers are suitable for many types of hats such as top hats, straw hats, berets, sports caps, and peaked caps. Sweat Absorbing This hat sweat liner is made of high-quality non-woven fabric, moisture-proof and breathable, with good sweat absorption. It keeps your eyes free from sweat, is soft, durable, lightweight, provides shock absorption buffer and heat insulation, and ensures comfort during wear. Comfortable to Wear The sweat-absorbent cap pad is made of skin-friendly soft non-woven fabric with good air permeability, feels refreshing and non-irritating. The edge of the cap patch is soft and delicate, gentle and does not hurt the skin, allowing you to enjoy a comfortable wearing experience during exercise. Wide range of Application This golf hat liner fits all kinds of hats, such as golf caps, baseball caps, sun hats, and hard hats, helping keep you dry in hot summer. It can also be used on necklines. Place the hat size reducer between the hat and the sweatband or between the sweatband and the head for comfortable cap wearing. Sufficient Quantity Includes 20 pieces of hat-reducing tapes, sufficient to meet your daily use and replacement needs. They can also be shared with family and friends.