Revive your favourite Karben dial adjustable riding hat with a fresh new liner. Fits neatly inside the hat securing via the touch close inner. The Karben liner features THERMOREGULATING 3D mesh for maximum airflow and a CoolDryTM headband. Compatible with Karben riding hats: 6513 Sienna, 6514 Valentina, 6515 Avena, 6517 Carmella, 6518 Daniella and 6519 Stella.