How to Care for Your Thunderpants So They Last for Years

Quick answer

Wash your Thunderpants in cold water on a gentle cycle with a mild detergent, then air dry them away from direct heat. Turn them inside out before washing to protect the fabric and prints, and avoid fabric softener and bleach. This simple routine keeps the organic cotton and bamboo blends soft and helps them last for years.

Thunderpants are made to be worn, loved, and washed over and over. With the right care, your favourite pairs can stay comfortable and colourful for years. Whether you have a pair in 100% Fairtrade organic cotton or the newer organic bamboo, a few small habits make a big difference.

This guide walks you through the exact steps to wash, dry, and store your Thunderpants. We will also cover common mistakes that shorten the life of your underwear and how to spot them early. By the end, you will know how to treat every pair like the long-term investment it is.

Why proper care matters for Fairtrade and bamboo fabrics

Fairtrade organic cotton and bamboo blends are softer and more breathable than many synthetic fabrics, but they need gentle handling. Harsh detergents, hot water, and high heat break down natural fibres over time, causing them to pill, lose shape, or develop holes. Caring for your Thunderpants properly is also a way to honour the people and resources behind them.

Bamboo fabric, in particular, can feel delicate when wet. The Sky Rise POWDER bamboo is made from organic bamboo and elastane, which gives it a silky feel and excellent wicking properties. Because there is no cotton in this style, it dries faster and is great for travel, but it still benefits from a gentle wash to keep its stretch and smooth finish.

• Always check the care label first—it has the final say.
• When in doubt, choose the coolest, gentlest option.

Step-by-step: How to wash bamboo underwear and cotton Thunderpants

Start by turning your Thunderpants inside out. This protects the outer print—like the artichokes on the Kids Original Artichokes—and reduces friction on the fabric. Use a mild, liquid detergent free from bleach and fabric softener. Fabric softener leaves a coating that reduces breathability and can trap odours.

Wash on a cold, gentle cycle or by hand in cool water. If using a machine, place delicate items in a mesh laundry bag to prevent snagging. Avoid washing with heavy items like jeans or towels, which can cause abrasion. For hand washing, gently squeeze the water through the fabric without twisting or wringing.

• Common mistake: using hot water. It can shrink cotton and damage bamboo's elasticity.
• Checkpoint: after washing, the water should be clear—if not, rinse again.

Drying and storing your Thunderpants

Air drying is the safest way to make underwear last longer. Lay your Thunderpants flat on a drying rack or hang them by the waistband. Avoid direct sunlight for extended periods, as it can fade colours. If you must use a dryer, choose the lowest heat setting and remove items while slightly damp.

Store your Thunderpants folded in a drawer away from rough surfaces. For bamboo styles like the Sky Rise POWDER bamboo, avoid hanging them by the delicate fabric—use the waistband instead. Proper storage prevents unnecessary stretching and keeps your favourites ready to wear.

• Never tumble dry on high heat—it is the fastest way to ruin elastic.
• Keep drawers dry to prevent mildew, especially in humid climates.

Handling special styles: camis, crops, and kids' wear

Camis and crops, such as the Cami Plain Black, are often worn as a base layer or on their own. They can be washed with your regular Thunderpants load, but use a lingerie bag to protect the straps and shaping. The straps are designed to cover a standard bra strap, so avoid hanging them by the straps to prevent stretching.

Kids' Thunderpants, like the Kids Original Artichokes, are built for play. They are modest and comfortable, but they still need gentle care. Wash them as you would adult styles, and check for any loose threads or small holes after each wash. Catching small damage early lets you repair it before it becomes a bigger problem.

• For made-to-order items like the MADE TO ORDER FROCK, follow the same cold-wash advice.
• Teach older kids to turn their underwear inside out before putting it in the laundry.

Your 5-step Thunderpants care routine

1. Turn inside out and check pockets: Before washing, turn your Thunderpants inside out to protect the outer fabric and prints. Check pockets for tissues or small items. This one habit prevents most print fading and fabric pilling.
2. Use a mild detergent, no softener: Choose a gentle, bleach-free liquid detergent. Never use fabric softener, as it coats the fibres and reduces breathability. If you miss softness, add half a cup of white vinegar to the rinse cycle instead.
3. Wash cold on a gentle cycle: Machine wash on cold with a gentle cycle, or hand wash in cool water. Use a mesh bag for camis, crops, and bamboo styles. Cold water protects elasticity and colour; hot water is the enemy.
4. Air dry away from direct heat: Lay flat or hang by the waistband to dry. Avoid direct sunlight and never use a hot dryer. If you must use a dryer, use the lowest setting and remove while slightly damp.
5. Store folded, not hung: Keep your Thunderpants folded in a dry drawer. Avoid hanging heavy items by delicate straps. Proper storage keeps shapes intact and prevents unnecessary stretching.

Product facts that affect care

• Sky Rise POWDER bamboo: NEW ORGANIC BAMBOOThese delicious soft & silkybamboo elastane sky rise these are so much cooler than our previous Bamboo/Cotton fabric. Because there is no cotton these have much better drying and wicking properties than the navy, so even better for travelling. Bamboo dries faster than cotton, so you can air dry it quickly and pack it for trips with less worry.
• Kids Original Artichokes: These prickly beauties were designed in 1995 as one of the original Thunderpants block print designs by Josie Bidwill and Victoria McKenzie. The print is part of Thunderpants history, so turning them inside out before washing helps preserve the design for longer.
• Cami Plain Black: The straps are not too wide but put in just the right place to cover a standard bra strap. Hanging by the straps can stretch them out of shape; dry flat or by the body instead.

Caring for your Thunderpants is simple: wash cold, skip the softener, and air dry. These small steps keep your Fairtrade organic cotton and bamboo underwear feeling great and looking good for years. Your future self—and the planet—will thank you.