*Absorb the moisture inside your helmets
*Filters toxic fume with purified filter
*Made from 100% superior cotton spandex
*Superior sweat absorbent
*Excellent ventilation of the fabric
*Fit, comfort and durability
*Warm wash not exceeding 30°c
*No bleach
Using instruction
*Wear it on your head with filter centered at a nose for pollutant filtration during respiration