I live in a place where I need a serious coat about three months a year. The other nine months, that coat occupies approximately forty percent of my closet. For years I just pushed it to the side and accepted defeat.

Then I visited a friend whose apartment was smaller than mine but somehow had more closet space. Her secret: she packed her coats like a flight attendant packs a carry-on. Everything had a place, nothing was wasted.

The vacuum bag revelation

I used to think vacuum storage bags were for blankets and sweaters. They are actually perfect for puffy winter coats. A down parka that takes up half a hanging rod compresses to about the size of a throw pillow. Three coats fit in the space of one.

Get the kind with a hand-pump valve, not just the roll-up kind. You do not need a vacuum cleaner. Twenty pumps with the little hand pump and the bag is flat.

Step-by-step: pack a coat for summer

1. Clean it first. Never pack a coat with body oils, food stains, or deodorant residue. Six months in storage turns those stains permanent. Dry clean or wash according to the label.
2. Check the pockets. I once packed away a coat with a granola bar in the pocket. Found it in November. It had become one with the lining.
3. Zip all zippers. An open zipper can snag fabric in storage and leave pulled threads.
4. Place cedar blocks or lavender sachets in the bag, not directly on the coat. Moths hate cedar but you do not want cedar oil on your clothes.
5. Fold, do not hang. Hanging a heavy coat for nine months stretches the shoulders. Fold loosely along the natural seams and place in the vacuum bag.
6. Compress gently. You do not need the bag to be rock hard. Enough air out that it is compact but the coat can still breathe a little.

Where to store them

Under the bed is ideal — cool, dark, and out of the way. Top shelf of the closet works too. Not the basement unless your basement is finished and climate-controlled. Damp basements plus fabric equals mildew in about two weeks.

I keep mine in a plastic bin with a snap lid after the vacuum bag — double protection against moisture and pests. The bin also stacks neatly.

Wool coats need different treatment

Do not vacuum-pack wool. The compression can permanently flatten the nap and create creases that will not come out. Wool coats should be dry cleaned, then stored in a breathable garment bag — cotton or muslin, not plastic — with cedar blocks. Hang on a wide, padded hanger to keep the shoulder shape.