The mat is pleasantly thick, you can no longer kneel pain. This is exactly what I bought it, did my usual yoga often knees hurt. When you have it just rolled out the short sides are still slightly arched, which are, however, within a few minutes. Despite extensive use so far no marks show on the mat. Only the fact of rolled upon delivery carrying strap and instructions have persisted, but as for this "indiscretion" in packaging the product can not I pull this from no star. Very practical is the strap that holds the mat in the rolled-up state directly to two points in the form.
