Multifunctional: The Draft Stopper works for doors and windows. It helps stop cold air from coming in during the winter and helps keep air conditioning in during the summer. It also helps block noise, light, and insects from entering your home. Charcoal Benefits: Activated charcoal is known to naturally absorb odors and removes moisture for fresher and cleaner air. The odor absorbent door guard is great to help with lingering odors in the kitchen. Sunlight Activated: The charcoal in our draft guard is naturally reactivated in sunlight to provide the amazing benefits of charcoal year after year. It just needs to be placed in sunlight for a couple hours to rejuvenate and then re-use like new. Smart Design: The 3 ft draft blocker provides a tight seal and is uniquely designed in a durable faux-linen fabric that works with most decor. It is weighted at 2.2lb so it easily stays put but light enough for anyone to handle. Easy Storage: Our Draft Blocker has a 7-inch loop handle to easily hang when it’s not in use.