FAQs

The sizing of WunderUndies is very subjective. As we target children with sensory needs, sometimes those children prefer tight clothing and sometimes they prefer loose clothing. WunderUndies waistbands are snug. So if your child prefers looser clothing you should definitely size up one or two sizes. Please consult the size chart for the best fit.

That being said, WunderUndies soft seam boxer briefs do run a little small in sizes 2T-8. If your child measures perfectly into a size, SIZE UP ONE. If they are between sizes, SIZE UP TWO. If your child measures into size 8, getting a size 10 will work.

WunderUndies Flat Seam Boxers are our newest version of WunderUndies with the sizing difficulties of our Soft Seam Boxers taken into consideration. The flat seam boxers are all sized larger than the soft seams so they do not run small.

If you need help choosing a size for your child, please reach out. I’m happy to help.

WunderUndies adult sizes are true to size. You can see how they fit differently sized bodies on our Adult Sizing Chart page which is linked at the bottom of the site in the footer.

Although some parents have had great success using WunderUndies as incentive for potty training, they are NOT specifically made for potty training. WunderUndies are not any more absorbent than normal underwear.

Read our article on Potty Training Advice.

Yes!! 

BUT they do have spandex in them so if your allergy includes spandex then unfortunately these will not work for you. 

Yes!! But the code only works once and it is for a $13 discount with free shipping. We have had many customers buy two trial packs and the $13 off is shared over both of them.

You can see our Return policy here.

If you have are at all worried about choosing the correct size, please contact me and let me know. I will do my best to make you happy.

Soon! WunderUndies ships every Monday and Friday! So if you place your order over the weekend it will ship out Monday afternoon! If you place your order Monday-Thursday it will ship out Friday afternoon. If there are any changes to this schedule, it will be shown at the top of the page.

We ship from Monroeville, Pennsylvania which is just outside of Pittsburgh! Shipping days are Mondays and Fridays unless it’s a holiday.

Bamboo fabric is celebrated for its exceptional softness and breathability.  Its natural moisture-wicking properties help regulate body temperature by wicking away sweat, so you’re always comfortable. Moreover, bamboo cultivation is environmentally friendly, as it requires minimal water and pesticides, making it a sustainable choice for eco-conscious consumers.

In addition to bamboo, our undies are also made of 27% organic cotton. Why does that matter? Well, bamboo can be a little finicky about the wash. The combination of bamboo and cotton make for a much more cooperative and easy-to-care-for garment without sacrificing any incredible softness.

WunderUndies should be washed on cold and dried on low. No bleach products. Iron on medium heat. Got stains? Check out the power of blue Dawn.

We have a coupon code for first time customers running at all times. You can get a trial pack for kid sizes just $12 with free shipping. Why? Because WunderUndies are here as a solution to a problem and I believe they’re an excellent one. But they may not be YOUR solution. So this is an easy way for you to try them out for your child without forking out a ton of money. If they’re the answer to your undie woes, I’m certain you’ll be back for more. Additionally, you can be sure that you're ordering the right size as the trial pack comes with 2 pairs in 2 sizes.

The coupon code is 2FOR12.

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Yes! If you spend over $50 on our website you will qualify for free shipping in the continental US. It will be automatically added as an option in your cart but you do have to choose it.

Unfortunately not at this time. Although it is a goal for the future!

Our products are designed in Pittsburgh, PA and made in both Pittsburgh (by me!) and China. We realize that that carries a stigma of cheaply made and horrible labor practices. But we didn’t choose this lightly. Our production partner in China was chosen by me personally. Not only do they have all of the proper certifications but I sent a representative to make sure that everything was operating ethically, on site. She only had excellent things to say. It’s a small factory so there aren’t any huge machines doing the work. It is people. And I assure you that the products are of very high quality. And that’s coming from me, a very picky seamstress.