Athleta Altitude Pant in Polartec If you're doing medium- or high-impact exercises in a cold climate, you'll want to opt for the thermal Athleta Altitude Pant in Polartec Power Stretch ($98) or Athleta Altitude Tight in Polartec Power Stretch ($98) to stay warm. Image Source: athleta.gap.com Athleta Altitude Pant in Polartec Power Stretch $98 from athleta.gap.com Buy Now Athleta Altitude Tight in Polartec Power Stretch $98 from athleta.gap.com Buy Now