Walmart offers the Ozark Trail 20-30F Thermolite Quallo Blanket Double Sleeping Bag for $29. Opt for in-store pickup to dodge the $5.99 shipping fee. That's $11 under our mention from a month ago, $23 off, and the lowest price we could find. It measures 86" x 60" and features 200g synthetic insulation.
The planet will thank you, your local (overwhelmed) landfill will thank you. Even your budget will thank you.