Size Guide

Working out your size for any clothing these days is proving to be a real battle, even when it comes down to the nitty gritty of men's undies.

If you narrow it down & look at Australian Men's underwear brands it varies from brand to brand, below is the Reer Endz Size Guide to help you select your size.

Reer Endz Men's Underwear Size Guide


Reer Endz Organic cotton singlet size guide

Lets now run through some tips and tricks that we think can help you get your Reer Endz into the best size for you so you can embrace comfy undies all day & all night long for that matter.

  • What is your board short or short waist size? That is usually a good indication on what waist size you would be in your Trunks or Briefs.
  • Take your waist measurement, to measure your waist, wrap the measuring tape around your waist. Where you’d like the band of the underwear to sit. You can even put on old underwear to be able to get an exact measurement.
  • Don’t wrap the tape too tight around your waist. Leave a finger’s space between the tape and your skin. It’s easier to move around in slightly loose underwear. Anything too skintight can cause rashes, irritation, and a bloated beer gut.
  • Secondly, while taking the measurements, don’t hold your breath in. Relax your shoulders, stand up straight, and keep your abdomen natural. Don’t flex your muscles. Breathe naturally. And definitely, don’t contract your abs if you think you’ll look slimmer in any kind of underwear.

It’s natural to be let down when your underwear is a bit off the mark. Not finding the right underwear size is more common than you think. 

That's why Reer Endz mens underwear will replace your wrong size if you follow these simple instructions when your undies arrive at your doorstep.

 Once your Reer Endz arrive, you can check the size of our undies by holding them up to your waist or wrapping the waistband around your neck as this will usually match your waist width. 

 If you purchase a bundle, please just try 1 pair before opening the remaining pairs as we can only provide a refund to unopened and unworn pairs. Remember we will replace the 1 x worn pair that you tried!

If you find the first pair doesn't fit, or you'd like to try another style, please contact us at

For those of you who are still feeling a little overwhelmed and worried to take that next step ADD TO CART, don’t worry Reer Endz men's underwear has you covered.

Simply follow our testing  tricks & even they didn’t work and you still feel need a different size, email us, we will send you a replacement FREE! Just be sure to only open one for testing if you bought multiple pairs!

Please note this is a size guide only and may vary for different body shapes.