Features: Great alternative to where electric air purifier can't get to –gym bags, hockey bags, sports equipment, luggage, fridge, car – and works 24 7 and consumes no electricity. Excellent for small spaces such as cars, closets, bathrooms, pet areas, and laundry rooms. The bag is easily portable and can be moved around. Natural alternative to candles, chemical deodorizers, and sprays. Non-toxic, fragrance free, and chemical free. Spill free. Activated Bamboo Charcoal is sealed inside well stitched double bags. The linen bags are wear resistance and have good ventilation. Breathable inner SMS non-woven fabric for better absorbability. And nice looking outside. Tips: Please place the bags outside under the sun monthly or as often as needed. Cloudy days are ok. Under the shade does not work. UV discharges odor causing and other particles trapped by bamboo charcoal, making the bag fresh again. Added air flow makes absorption faster, such as placing bamboo charcoal bag in front of a fan or intake outtake of dehumidifier. In order to completely eliminate odor, the source needs to be deep cleaned eliminated. Until then, bridge that gap with bamboo charcoal bags. For example, vacuuming ashes from cigarette smoking in the car helps with odor elimination.Use 2 years more. Please "recharge" the bags outside monthly or as often as needed during the day time. UV discharges odor causing and other particles trapped by bamboo charcoal, making the bag fresh again. Bamboo charcoal is known to absorb odor causing particles, also mold spores and volatile organic compounds (VOC). Bamboo charcoal is more porous than regular charcoal and traps more from air. Ball Chain is supplied which is ultra handy for hanging! Use in home such as closet, bathrooms, laundry rooms, pet area, and fridge, and cars. BYE BYE Stinky gym bags, hockey bags, sports equipments! - Activated Bamboo Charcoal bags take care of that by absorbing odor and moisture. 4 pack x 200g - consisting of 2 packs of Grey and 2 packs of Black - giving you color options. Label on other side.