Thunderpants 90% organic cotton/10% spandex fabric is sturdy, very stretchy, and has great retention to give our garments just enough stretch and bounce back. It helps the undies to stay up and on, and the other garments to keep their shape without sagging or bagging. We use the same soft organic cotton blend to cut our binding into a wide strip instead of using elastic so there is never any irritating elastic against your skin.The Sky Rise are our high waisted style. This ultra comfortable full brief sits in the natural crease at the top of the leg and reaches all the way to your natural waist. They taper in at the top, so will sit and stay right at the waist all day long. Perfect for those who are looking for an extra high wedgie-proof undie.