Made the mistake of wearing a pair of running shorts to a yoga class and was informed by a lady next to me that while stretching I was doing the male version of what my wife and I refer to as a "Sharon Stone," as in the legendary scene in Basic Instinct. Embarassing.

Ordered the prAna shorts.  Problem solved.  No more male "Sharon Stone,"  plus the shorts are comfortable, flexible and seem to be very durable.

I tried both large and extra large, settling on the XL.  I wear 36 waist pants and weigh 195.  While large would have worked, the XL are just a little roomier.

I have practiced yoga for close to 20 years.  Best yoga apparel I have worn.  Recommend.