It sits snugly on the wais;, very secure. The waist band is not only secure and snug but also soft, therefore it adds to the feeling that one is wearing nothing. The string in the back does not chafe, and the pouch in the front is also just loose enough and just snug enough to feel, again, secure. Wearing it under a pair of jeans feels so comfy, especially since there are no underwear lines. This a a great pair of underwear.