Here's what other sites are saying:
This Sierra Designs Gamma Tent Footprint provides an extra floor made of durable 70 denier 3 oz. nylon taffeta that fits exactly beneath your tent to reduce wear and tear on your tent's floor. Also, when combined with just your tent fly and poles, the Gamma footprint, lets you set up a basic shelter in mild weather and leave the extra weight of your tent body behind.
- Appalachian Outdoors
Increase the versatility and extend the life of your Sierra Designs® Gamma tent with this Fastpack Footprint. Grommets and stake loops give you the option of setting up just your rainfly and poles over the footprint, creating a lightweight, basic shelter. Use footprint underneath tent to protect tent floor from abrasion and wear; attaches with elastic cords and hooks. Sized a bit smaller than tent to prevent pooling of water under tent during rainy weather. Includes mesh stuff sack. Special buy.
MSR Hubba Hubba / NX / HP Footprint
$32 - $135
Hilleberg Kaitum 3 Footprint
Eureka! Floor Saver Square Medium
$13 - $21
ALPS Mountaineering Tasmanian 2 Floor Saver
The North Face VE 25 Footprint
Black Diamond Ahwahnee Ground Cloth
Marmot Thor 3P Footprint
$70 - $80
Eureka! Rectangular Floor Saver
$11 - $14