Knitted Christmas Jumper Care: Washing Without Shrinking

Quick answer

Hand wash your knitted Christmas jumper in cold water with a gentle detergent, then reshape it flat to dry. Avoid hot water and tumble drying, which cause shrinkage. This method works for most acrylic and wool-blend knits, including licensed sweaters like the Official Suicide Squad Christmas Jumper.

Why knitted jumpers shrink and how to prevent it

Shrinkage happens when heat, agitation, or harsh chemicals cause natural fibers like wool to contract and felt, or when synthetic fibers like acrylic are exposed to high temperatures. Cold water and minimal agitation are your best defenses. Always check the care label first: if it says dry clean only, follow that. For most Christmas jumpers, hand washing is safest.

How to hand wash a Christmas jumper step by step

Fill a clean sink or basin with cold water (below 30°C/85°F). Add a small amount of gentle detergent or wool wash. Submerge the jumper and gently squeeze the suds through the fabric; do not rub, wring, or twist. Let it soak for up to 10 minutes, then rinse with cold water until no suds remain. To remove excess water, press the jumper against the side of the basin or roll it in a clean towel. Never wring it out.

Drying flat to keep the shape

Lay the jumper flat on a clean, dry towel or a mesh drying rack. Reshape it to its original dimensions while damp. Keep it away from direct heat, sunlight, and radiators, which can fade colors and cause shrinkage. Turn it over after a few hours to help it dry evenly. Do not hang a wet jumper, as the weight of the water can stretch it out of shape.

Storing festive knitwear until next season

Once completely dry, fold your jumper rather than hanging it. Hang it on a padded hanger only if you have space and the knit is lightweight; otherwise, folding prevents shoulder bumps and stretching. Store in a cool, dry place away from direct light. For wool blends, use a breathable cotton storage bag or a clean pillowcase to protect from dust and moths. Avoid plastic bags, which can trap moisture and cause mildew.

Special care for embellishments and prints

Many Christmas jumpers feature embroidery, appliqués, or printed details. Turn the jumper inside out before washing to protect these areas. If the jumper has glued-on decorations, spot clean instead of submerging. For embroidered logos, like the patch on the Official Suicide Squad Christmas Jumper, a gentle hand wash is usually safe, but always test a small area first.

Your 5-step washing routine

1. Check the care label: Look for washing symbols and fiber content. If it says dry clean only, do not hand wash. If it says machine wash, you can use a mesh bag on a gentle cycle, but hand washing is still safest for embellished jumpers. When in doubt, hand wash.
2. Pre-treat stains: Gently dab stains with a small amount of gentle detergent and cold water before washing. Do not rub, as this can spread the stain or damage fibers. Act quickly on stains for best results.
3. Wash in cold water: Use a clean basin filled with cold water and a capful of gentle detergent. Submerge the jumper and gently squeeze the suds through it for a few minutes. Let it soak for up to 10 minutes. Never use hot water or bleach.
4. Rinse and remove water: Rinse with cold water until no suds remain. Press the jumper against the basin to remove excess water, then roll it in a clean towel and press to absorb more. Do not wring or twist. Wringing causes stretching and distortion.
5. Dry flat and reshape: Lay the jumper flat on a dry towel or mesh rack. Reshape to original dimensions. Keep away from heat and sunlight. Turn over after a few hours to dry evenly. Never tumble dry or hang wet.

Product facts

• Official Suicide Squad Christmas Jumper / Ugly Sweater: Official Suicide Squad Christmas Jumper / Ugly Sweater features high-quality patch embroidery of The Suicide Squad logo and Nordic details, with character references like Killer Shark and Harley Quinn. The embroidery and details require gentle handling to avoid snagging or damage during washing.
• The Big Bang Theory ‘Bazinga’ Christmas Jumper / Ugly Sweater: The Big Bang Theory ‘Bazinga’ Christmas Jumper / Ugly Sweater is an official Warner Bros product with a traditional Nordic design and winter colors. The knitted construction and printed or embroidered elements benefit from the same cold-water, flat-dry care to prevent shrinkage and fading.