3D goggles helmet, ventilated and breathable.The shell is made of high-strength PC material, and the main body is made of high-density EPS material, with stable structure and strong impact resistance.The magnetically detachable lens can fall off directly without hurting your face.The head circumference of the tail can be adjusted.The helmet + lens weighs about 320g, which reduces the pressure on the head.18 ventilation holes for ventilation.Detachable 3D lining for easy cleaning.Product Name: Outdoor Sports Cycling HelmetWeight: 289gShell material: PCInternal material: high-density EPS foamSize: Free size (suitable for head circumference 56-62cm)Features: Integrated design of goggles + helmet, high safety and good air permeabilityApplicable scenarios: outdoor sports, cycling sports, etc.