1、Large Door Draft Stopper - When winter comes, this Large door draft stopper prevents the heat air from your AC system from escaping your room, simply effective in managing your heating and cooling bills! 2、It’s also an outstanding soundproofing tool and can shut out noise and somke. It also filters out 90 percent of the sun’s rays. So they’re to hang in the bedroom of a late-morning sleeper or someone who works a night shift. 3、This draft blocker stays put as it easily slides back and forth across the floor. It also adjustable and can easily fit the length of your door (30 to 36") 4、The door draft stoppers for bottom of door can keep dust and insect out of your room. No need to worry being scared of cockroach and dust entering your room. 5、 Self-adhesive door draft blocker is suitable to cover the gaps of exterior/interior doors, rv doors, shower room, baseboard, threshold, windows, garage, basement and furniture