Designed to accommodate thick or voluminous hair, this durable and hypoallergenic silicone swim cap features extra room at the crown. To help keep it in place and provide a snug fit, we added a gripper band to the interior DESIGN & DETAILS: Interior gripper band helps keep your cap in place as you swim. High-stretch silicone is hypoallergenic, durable and designed to withstand regular use in chlorinated water. 100% silicone