A bit early to talk about durability as I've only had these panties for a few days now.....but so far, very happy with them.  I'll be ordering more.  I've washed in warm water and dried to damp on low setting in the dryer.....no shrinkage at all.  Have worn them only twice so far.  Nice fabric, elastic is covered, fits well. Wore all day with no riding up or discomfort.  I thought the leg openings would be too tight when I first put them on, (large thighs) but then I forgot about them.  The mark of a truly comfy panty is if you forget about them.  If you remember you have panties on, it's because they are bugging you for one reason or another.  Relative to other high quality, organic cotton, non-toxic dye panties.....the price on these is reasonable. If they are durable and last a year or more, they are well worth the price.  Time will tell.  I am 5'6", 140 lbs, solid size 8, and size Med fits perfect.