I bought this for use with my motorcycle. Initially, I was concerned about the smell, so I removed the filter and washed it. The smell has lessened, but it's still a scent I don't particularly like, so I haven't used it. I recommend this for people whose ears hurt from masks. In the state shown in photo 2, the longest part is about 30 centimeters. It's free size and has Velcro, so I think both men and women can use it. ■ Product: Motorcycle mask / Cycle mask Please replace the filter every 30 days. Also, we recommend replacing it sooner depending on the usage time and environment. ■ Fabric: Lycra (There is a slight smell due to the fabric. Please refrain from purchasing if you are concerned.) ■ Color: Red ■ Recommended points: Δ Washable fabric for repeated use. Δ Uses: On-road, off-road, bicycle, cycle, gas mask, outdoor sports, skating