Please DO NOT order based on the size you normally wear in another brand because my sizes may or may not be comparable. If you are unsure which size to order please contact us before ordering at and we are happy to help. You can also see a more in-depth size guide in my blog here
How to measure for Carl Wesley underwear: Place a tape measure around your hips below the navel and above the buttocks. Take the measurement to the body only - do not measure over layers. This is the waist measurement you will plug into the size chart. If you are between sizes, always SIZE DOWN.  Never size up for any reason. My sizing is more inclusive than comparable brands so most guys need to size down from the letter size of what they would normally wear.
Carl Wesley Underwear Size Chart