DescriptionHat left and right sides can adjust the size, suitable for peopledifferent head circumference to use. Wind, cold winter outdoor activities dedicated cycling in the cold when you can wrap the whole face, or it can be pulled down, pulled his chin or nose can change based on actual usage.Features- Color: Grey. - Material: Knitted. - Size: 45 x 18 x 1 cm. - Made of lightweight, highly breathable,quick-dry material,feels comfortable and solid, protects you from bad weather and also makes you cool and comfortable. - Super Comfortable wear them perfect for spring, summer, autumn and winter. - Suitable for outdoor sports, climbing, running, cycling, motorcycle, Motorcycling, biking, trekking, boating, skating, hunting. - Exquisite sewing make it outstanding from usual hat.