Find My Size Trial Packs

We have found that while kids love their WunderUndies, they are very particular about their sizing. Some like them looser and some like them tighter. So the Find My Size Trial Pack was invented! With this trial pack you will receive 2 pairs of WunderUndies in 2 consecutive sizes. This way you can find the size that suits your child the best. 

If one size doesn't fit at all, please give it to a friend!