• Only Marmot could confirm but they seem to match up, spec wise. Optima, per STP is 15 oz. wt., 27" length; Minimalist, per Marmot is 14.4 oz. wt. and 27.25" length. Otherwise, all other specs appear identical.
    Answered on 3/11/2016 6:52:30 AM by Lou lou from Louisville, KY
  • Pretty sure it is. Wore it on a hiking trip in Swiss Alps. Kept me dry thru hours of rain and sleet. Very satisfied.
    Answered on 3/11/2016 8:47:17 AM by kel from Illinois