Brand: LUEASPY Features: integrated design / adjustable head circumference / super light weight Material: shell PC / lined with high density EPS Color: 7 colors, as shown in the figure. Seven of them are bright Weight: 195g Air hole: 29 holes size: M code 54-58cm, internal width 17-17.5cm; l code 57-63cm, internal width 17.7-18cm 4th dimension cooling system, super large front air inlet, improve air flow and keep head cool. The thin, soft and lightweight 4x drylite mesh does not deform due to water or sweat The easy-to-use super fit system provides three kinds of height adjustment, with the function of fine adjustment of tightness. The unique lightweight strap system enhances the wearing safety. High performance padded design enhances comfort and sweat wicking performance.