High loft proprietary edition Power Stretch has super snuggleliscious interior, smooth knit outer face fabric and is packed with warmth. Use for fast forward winter sports, as a base layer for expedition climbing or by themselves for cool weather climbing and aerobic endeavors. RHO TOP features a tapered cut, 6 panel construction, 8" collar zipper and climber length sleeves. BOTTOMS are sewn with “on crease” flat constructed seams and low profile elastic and drawstring waist. Optional reverse “thru the crotch zip” available (at no extra charge) for winter & expedition climbers - please specify at time of order.