This Style is made using a cotton lycra Australian Made fabric, which is not a rib its a flat fabric, two way stretch like leggings fabric.  This is a special fabric which is made in Melbourne and is a . great quality.  The stretch in this fabric has similar stretch properties as the classics, nice and firm fit. Just more versitle for the gym, yoga or shopping.  A very compfy pair of Mytikos for active wear and every day wear!'.