We’re celebrating National Sweater Day with 6 picks to don today (but before you check ‘em out, watch a granny tell you to!)

Today, the WWF is teaming up with grannies nationwide for National Sweater Day—a day to raise awareness about energy conservation. Led by spokesgranny Gladys, in her poinsettia-patterned knit, the campaign is meant to persuade the thermostat-inclined (guilty as charged) to don a sweater and turn down the heat. As Gladys says, grannies are “natural energy conservers” who put on a sweater when they get cold. And as we learn in the hilarious campaign video, you can sign up to receive a phone call from an on-staff granny who will nag gently remind you (as grannies do) to turn down the heat. We’ve picked our favourite knits to help you conserve energy for the day.

See our picks now! »