Storing your off-season clothing in a storage unit can save room in your closet. Clothes must be stored properly, though, or you could damage your wardrobe.
Moisture is the big killer of clothing items in storage. Dampness and humidity in the air are easily absorbed by fabric, so even watertight units with no leaks can develop moisture issues. Over time, mustiness sets in with its unpleasant odor. Eventually, mildew and mold can ruin the clothing.