Characteristics: It can effectively prevent the invasion of firecrackers, welding slag, dust and other objects to burn the neck and face. Maska adopts the highest quality material and sponge do viewing, it is durable, sweat-absorbing, heat-resistant, breathable, very comfortable to wear. With Velcro loop on the back of the mask for quick and comfortable wear and size adjustment. The perfect accessory for full protection of welders. Specification: Material: cow leather sponge glass Color: sunny yellow black (shown as photos) Helmet height: Ok. 29 cm /11.42 inch Helmet thickness: Ok. 1.4mm/0.55inch Head Circumference: Ok. 60 cm /23.62 inch Lens size (dxs): ok. 9x4 cm/3.54x1.57 inch Weight: Ok. 410g List of things do packing:1 x welding helmet with lens All size data are measured manually, please allow slight deviations. The actual color of the item may be slightly different from the ones shown on the internet due to different monitors. The lens on the mask does not have an automatic dimming function.