UV-cut arm covers made of linen material, with a maximum UV protection rate of 97.8%. Highly recommended for the coming summer, as they won't get stuffy! Linen Arm Covers - UV Protection Rate: Up to 97.8% - Material: Primarily linen. Contains nylon. Linen 78%, Nylon 16%, Polyester 5%, Polyurethane 1% - Features: Primarily linen, so they are very smooth and cool. Made in Japan Please choose one color from the three options: yellow, wine, or brown, and comment. Thank you for viewing.