Hustle and be a champion with the Buff's lightweight merino wool hat solid pool hat - lw merino . Crafted using high quality polyester material, it great for outdoor sports. Lightweight and is extremely versatile and great as base protection layers for fresh weather. Extremely soft feeling. Comfortable and natural fibres tubular made of Merino wool. Ideal tubular for use during low-medium intensity outdoor activities such as trekking, hiking and climbing.