The CS23 Balaclava is designed to be flexible in how it is worn. Using stretchy polyester elastane fabric, it fits tightly to the head while allowing for ease of movement. Perforated holes at the breathable mouthguard allows for a comfortable wear. This product is highly versatile and can be worn in a number of different ways. Shell Fabric: 92% Polyester 8% Elastane 260g and Contrast Fabric: 100% Polyester 300g.