# The Big Mistake You're Making When Storing Winter Clothes Museum textile experts reveal how your winter storage habits are actually aging your clothes faster. - **Source:** [Trendir](https://brifing.si/source/fa0937ee-5bfe-4107-bbbb-30be072b2212) - **Published:** 2026-08-17 - **Original article:** - **On Brifing:** https://brifing.si/s/2b7aa3c9-ab47-4587-b623-b0a6972c30bb ## The common mistake in winter clothing storage Most people store their winter clothes in dry-cleaning bags or vacuum-sealed bags after cleaning. These methods actually damage the garments instead of protecting them. Museum textile experts explain that natural fibers like wool, cashmere, and down need to 'breathe'. Clothes stored in plastic bags for extended periods develop yellowing, musty odors, and loss of down loft. ## How plastic bags damage fabrics Research shows that BHT, a chemical found in plastic bags, reacts with air pollution to create yellow stains on fabrics. A study in the Journal of the Society of Dyers and Colourists found this reaction particularly noticeable on natural fibers like wool and cashmere. Smithsonian textile experts warn against direct plastic contact with clothing. ## The moisture and moth problem Colorado State University Extension research indicates that humidity levels inside plastic bags create ideal conditions for clothes moths. Moth larvae thrive at 75% humidity and feed on invisible sweat, oils, and food residues on clothes. Trapped moisture also leads to mildew formation and unpleasant odors. Experts emphasize cleaning all garments before storage. ## Vacuum bags' effect on down Down jackets' warmth comes from the three-dimensional structure of feather clusters. Care guides from all major down brands warn that prolonged compression permanently damages this structure. Jackets stored in vacuum bags lose significant loft and never fully regain their original insulating performance, even after fluffing. ## Museum experts' storage methods Textile conservators preserving century-old garments use specialized storage techniques. Both the Smithsonian and Canadian Conservation Institute recommend breathable cotton or unbleached muslin garment bags. These allow air circulation while protecting from dust and insects. Experts note dry-cleaning bags should only be used for transportation home. ## Step-by-step proper storage guide To store winter clothes correctly, first clean everything thoroughly. Dry-clean wool and cashmere, wash washables in the coldest water recommended, and ensure down items are completely dry before storage. Remove dry-cleaning bags immediately upon arriving home. Store clean garments in breathable cotton or muslin garment bags that allow air circulation while providing protection. ## Cost and time implications Breathable garment bags cost approximately $10-$15 (€10-15) each and take just two minutes per garment to use. While this method requires slightly more space than traditional storage, it significantly extends clothing lifespan. In the long run, preserving existing garments proves more sustainable and cost-effective than frequent replacements. ## Why this matters Proper storage preserves both appearance and functionality of clothing. Research shows incorrectly stored garments typically become unwearable after 2-3 seasons. Adopting these simple yet effective methods protects investments in natural fiber clothing and reduces textile waste. The same techniques museums use to preserve century-old textiles can make a difference in everyday wardrobes. ## Sources covering this story - https://www.trendir.com/your-winter-coat-came-out-of-storage-flat-and-musty-this-one-step-you-skipped-last-spring-is-why/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._