From Rad Patterns:
The Long John Jammers is very quick sew that gives you the comfiest pants to lounge around in!
Featuring a tapered leg with a cuff and cozy bunching at the ankle, and the option for a drawcord or yoga style waistband. These pants are a snug fit, with negative ease through the hip and thigh, or you can size up to get a more relaxed fit.
The Long John Jammers are perfect for any level of sewing. This pattern is made to use knit fabrics with at least 30% stretch across the grain. For optional yoga style waistband, fabric with good recovery is recommended.
Sizes XXS - 4XL (Hips 33 - 68")