One size fits all. Perfect for fitting different head sizes as it can adjust the most comfortable tightness on your hairline. Say goodbye to headache.Widened frontal band and narrowed backside can cover the most-slipping area to reinforce its friction. No more slippage when wearing wigs.Thinner and soft velour fabric makes it super breathable, especially in summer. A row of precise stitches sewed on the top ensures durable use. Stylish and neat rhombus lines are more attractive. Warm Tips - Please wear the grip with Logo facing outward on the right side of head to make sure no slippage Note: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2. Please allow slight dimension difference due to different manual measurement. Thank you for your understanding.