Size Guide

Please refer to our Size Guide below to determine which size will suit you best.

Men’s AU Size

Waist (cm)

Waist (inch)

S

72-77

29-31

M

80-85

32-34

L

86-93

34-36

XL

94-103

37-41

XXL

104-110

42-44

3XL

112 - 120 44-47

 

Trunks VS Boxer Briefs:

Our Boxer Briefs have a longer leg length than the current market standard. This is to provide additional protection, working alongside our 'Unchafable' lycra thigh panels, to eliminate chafing and ensure maximum thigh comfort. Boxer Briefs are designed for guys with big thighs, and guys who like their underwear to provide additional thigh coverage.

Trunks are a shorter leg length and the current market standard for trunks. They are designed for leaner guys who do not need the additional thigh protection. They have all the same innovative features as the Boxer Briefs to ensure your comfort. 

60 Day Love It or Its Free Guarantee

Our 60-Day Love It or It's Free Guarantee ensures your satisfaction with your first purchase of Ultimate Underwear. If you open and try on your initial pair and find that you don't love them, you can keep the product and receive a full refund, excluding any shipping charges paid. This guarantee is valid for 60 days from the date of your order.

In the event that the size of your first pair is incorrect, you can request an exchange and only pay the shipping fee for the replacement pair.

For customers who purchased multiple pairs in their initial order, you have the option to return any unopened and unworn pairs in their original packaging for a full refund, excluding return shipping fees which you are responsible for. Additionally, we offer the possibility to exchange the remaining pairs for a different size, with the customer responsible for the return shipping fee. Please note that this guarantee is applicable within 60 days from your order date.

Kindly note that if the replacement pair still does not provide a satisfactory fit, we regret that we cannot process a further refund or provide another replacement. We appreciate your understanding in this matter.