I measured a selection of these long johns and found the waist size to be very flexible. The stretch material of the pant means there is a wide variety of sizes they will fit and I’ve tried to reflect that in the size chart below. Most people will find a good fit by buying the size they normally wear in men’s clothing. We recommend you measure your waist or the waistband of your favorite jeans to see what size pants you need.
Inseam is a little tricky here, the long johns measure out to about 30” inseam but they are stretchy and have a heel loop so they should work for just about everyone. They are designed to go to about the ankle so they should work for normal pant inseams up to a 36” with the stretch.
Here is a chart I put together to show you how each long john size measures out so you can select the size based upon what you come up with when you measure yourself.
| Long John Size | Min Waist Size | Max Waist Size |
|---|---|---|
| Small | 28 | 33 |
| Medium | 30 | 35 |
| Large | 32 | 37 |
| XL | 34 | 39 |
| XXL | 36 | 41 |
| XXXL | 38 | 43 |