How to Store Winter Gear in the Off-Season Without Ruining It

More winter gear is destroyed in the wardrobe between April and November than on any mountain. The failure modes are quiet — crushed loft, larvae in the merino, cracked boot midsoles — and every one of them is preventable in an afternoon.

The two rules that cover everything

1. Store everything clean. Body oils, sweat and dirt keep degrading fabric all summer: they attract moths to wool, feed mildew in damp corners, and slowly break down down clusters and DWR coatings. A garment stored dirty ages several seasons in one.
2. Store everything dry and uncompressed. Moisture plus a sealed container is a mildew recipe; long-term compression is how insulation dies. Cool, dry, dark, and loose is the target for every single item below.

Down jackets and parkas

Down survives decades if it spends the off-season lofted. Left compressed in a stuff sack for six months, the clusters take a set and never fully recover — the jacket comes out of storage measurably colder.

• Wash it first (technical down wash, thorough rinse, tumble dry low with dryer balls until completely dry — a damp core mildews in storage).
• Hang it on a wide hanger in a wardrobe, or lay it loosely in a large breathable cotton storage sack. Sleeping-bag owners know these as "storage sacks" — the enormous mesh or cotton bags that come with good bags. Same principle.
• Never: vacuum bags, stuff sacks, sealed plastic boxes. Six months of vacuum compression can cost a down piece a chunk of its loft permanently.

Synthetic insulation is more forgiving but follows the same rule — loose beats compressed, every time.

Merino and wool

Clothes moths eat protein fibres, and they find dirty wool first — sweat and skin flakes are the attractant. The counter-measures, in order of effectiveness:

1. Wash everything before storage. This alone prevents most infestations.
2. Store in sealed containers or zip bags — this is the one category where airtight is right, because the enemy is insects, not moisture (wool must go in bone-dry).
3. Cedar blocks and lavender are mild deterrents, not pesticides. They help; they don't rescue a dirty jumper in an open drawer.

Fold wool rather than hanging it — heavy knits stretch on hangers.

Hardshells and softshells

Wash with technical cleaner, re-up the DWR if the sprinkle test fails (do it now, not next November), and hang them dry before storage. Shells can hang all summer or lie folded in a breathable bin; they don't care about compression the way insulation does. What they do care about is heat: don't store membrane jackets in a hot attic or a car boot — sustained heat ages seam tape and laminates. If the seam tape is starting to lift, summer is the time to send it for warranty or repair, not the first cold week of December.

Winter boots

• Clean off road salt with a damp cloth and a splash of vinegar — salt left on leather draws out moisture and cracks it over the summer.
• Dry them fully, open, with the footbeds pulled out. Never on a radiator; heat delaminates soles and warps leather.
• Condition leather boots (wax or cream), then store them somewhere ventilated with boot trees or stuffed newspaper — not sealed in the plastic tub in the damp garage, which is a mould programme.
• Store upright, not with one boot crushed under a bin of skates.

Hats, gloves, gaiters, socks

Wash the lot (glove liners and hats absorb a full season of skin oil), dry completely, and store together in one labelled breathable bin. The point of "together" is next November: the season starts the day the temperature drops, and the family that can find both mittens of every pair on day one is running a different operation from the one digging through three boxes.

The 30-minute spring checklist

1. One washing-machine load of technical fabrics with the right cleaner; one of wool.
2. Down items fully dried and hung, not stuffed.
3. Wool sealed clean and dry.
4. Boots cleaned, conditioned, stored ventilated.
5. Anything broken — zips, seam tape, blown DWR — repaired now, in the repair off-season, while turnaround is fast.

The one-line answer

Clean, bone-dry, uncompressed, cool and dark. Down loose, wool sealed, boots conditioned — and next winter starts with gear that works instead of a restoration project.