How to Choose and Use a Tent Footprint for Your Big Agnes Tent

Quick answer

Choose a tent footprint that matches your tent model exactly, not a generic tarp. A properly sized Big Agnes tent footprint protects your floor from abrasion and moisture, extends tent life, and can even enable a lightweight Fast Fly setup. Use it only under the tent floor, and avoid letting it extend beyond the edges to prevent water pooling.

A tent footprint is a simple but essential piece of gear for any camper who wants to keep their tent floor in good shape. It acts as a barrier between your tent and the ground, shielding it from sharp rocks, rough dirt, and moisture. For Big Agnes tents, using a footprint is especially recommended because it not only protects your investment but also opens up the option of a lighter, Fast Fly shelter setup.

In this guide, we’ll walk you through how to pick the right tent footprint size, when to use one, and how to set it up correctly. We’ll also cover the difference between a footprint and a tarp, and give you clear decision rules so you can choose the best option for your camping style.

Why Use a Tent Footprint?

The main job of a tent footprint is to protect the floor of your tent. Tent floors are made from thin, lightweight materials to keep pack weight down, but that means they can be vulnerable to punctures and abrasion. A footprint adds a durable layer between the tent and the ground, so you can pitch on rocky or sandy sites without worrying about damaging the floor.

A footprint also helps keep moisture out. Even with a bathtub floor, condensation and ground moisture can seep through over time. A waterproof or water-resistant footprint creates a barrier that helps keep the inside of your tent drier. Plus, a footprint makes cleanup easier: you can shake off dirt and debris from the footprint rather than scrubbing the tent floor.

• Always use a footprint that matches your tent model for a precise fit.
• Check your tent's care instructions—some footprints are designed to be used only with specific tents.

Tent Footprint vs Tarp: What’s the Difference?

A tarp is a generic, rectangular piece of waterproof material that can be cut or folded to fit under a tent. While a tarp can provide some protection, it rarely matches the exact shape and size of your tent. If a tarp extends beyond the tent floor, rainwater can collect on it and pool under your tent, which can lead to moisture issues. If it’s too small, it leaves parts of the floor exposed.

A tent footprint, on the other hand, is custom-made for a specific tent model. It’s shaped to match the tent floor exactly, with grommets or attachment points that align with the tent’s corners. This ensures full coverage without excess material. For Big Agnes tents, using the correct footprint also enables the Fast Fly setup, where you pitch only the fly, poles, and footprint—leaving the tent body at home to save weight.

• For a precise fit and Fast Fly compatibility, choose a Big Agnes tent footprint over a tarp.
• If you’re on a tight budget, a tarp can work, but you’ll need to measure and trim it carefully.

How to Choose the Right Tent Footprint Size

The most important rule is to use a footprint designed for your specific tent model. Big Agnes footprints are made to match the exact dimensions of the tent floor, including the corners and vestibule areas. For example, the Tiger Wall UL3 Footprint is shaped to fit the Tiger Wall UL3 tent, while the Tiger Wall 2 Carbon Footprint is for the Tiger Wall 2 Carbon. Using the wrong size can leave gaps or cause bunching, which reduces protection and can cause water to pool.

If you’re unsure which footprint fits your tent, check the product page or the tent’s specifications. Most manufacturers list compatible footprints. Never assume that a footprint for a similar-sized tent will work—the shape and pole attachment points can differ significantly, even between models from the same brand.

• Always verify compatibility before purchasing a footprint.
• If you’re between sizes, choose the one made for your exact tent model—don’t guess.

How to Use a Tent Footprint

Using a footprint is straightforward. First, clear the ground of sharp objects like sticks and rocks. Then lay the footprint flat, with the waterproof side facing up (if it has one). Position your tent on top, aligning the corners and attachment points. Most footprints have grommets or clips that match the tent’s corners, so you can secure them together. Finally, stake down the corners of the footprint or the tent, depending on the design.

One key tip: make sure the footprint doesn’t extend beyond the tent floor. If it does, rain can run off the fly and collect on the exposed footprint, creating a puddle under your tent. The footprint should be slightly smaller than the tent floor, or exactly the same size, but never larger. If you’re using a tarp, you may need to fold or cut it to achieve this.

• Keep the footprint taut and flat to avoid wrinkles that can cause wear.
• In heavy rain, check that water isn’t pooling on the footprint—adjust if needed.

Decision Rules for Choosing a Tent Footprint

• Match the model: Always choose a footprint made for your specific tent model. Generic tarps may not fit properly and can cause water pooling or leave areas unprotected. Check the tent’s product page for the compatible footprint.
• Consider Fast Fly compatibility: If you want to save weight on solo trips, choose a footprint that supports Fast Fly pitching. This lets you use only the fly, poles, and footprint. Big Agnes footprints enable Fast Fly setups—perfect for ultralight backpackers.
• Prioritize floor protection: If you camp on rocky or abrasive ground, a footprint is essential. It’s a low-cost way to extend the life of your tent floor. If you’re unsure, err on the side of using a footprint—it’s cheaper than repairing a tent floor.

Big Agnes Footprints and Tents

• Tiger Wall UL3 Footprint: To extend the life of your tent floor, we recommend using a Big Agnes footprint or ground cloth. The Big Agnes footprint also enables you to pitch a lightweight, Fast Fly shelter while leaving the tent body behind. The Fast Fly configuration requires the footprint, tent fly, poles, and stakes. If you own a Tiger Wall UL3, this footprint is a must-have for floor protection and for cutting weight on trips where you can leave the inner tent at home.
• Tiger Wall 2 Carbon Footprint: To extend the life of your tent floor, we recommend using a Big Agnes footprint or ground cloth. The Big Agnes footprint also enables you to pitch a lightweight, Fast Fly shelter while leaving the tent body behind. The Fast Fly configuration requires the footprint, tent fly, poles, and stakes. For Tiger Wall 2 Carbon owners, this footprint offers the same dual benefits: floor protection and the option to go ultralight with a Fast Fly setup.
• Copper Spur UL5: Since its launch in 2008, the award-winning Copper Spur has been our most popular ultralight backpacking tent. Thanks to our proprietary HyperBead® fabric, the latest Copper Spur UL is lighter, stronger, and more waterproof than ever! High volume, freestanding design provides ample interior room and the stability to keep you sleeping soundly through the roughest backcountry nights. Fully featured, with design aspects... If you’re using a Copper Spur UL5, a matching footprint not only protects the floor but also helps preserve the tent’s lightweight and durable design for years of backcountry use.

Best Fit for Your Camping Style

Best for

• Backpackers who want to reduce pack weight with a Fast Fly setup
• Campers who frequently pitch on rough or rocky terrain and want to protect their tent floor
• Anyone who wants to extend the lifespan of their Big Agnes tent

Not for

• Ultralight purists who are willing to risk floor damage to save a few ounces
• Campers who always use a groundsheet or tarp and are satisfied with that level of protection

A tent footprint is a simple, affordable way to protect your tent floor and extend its life. For Big Agnes tents, using the correct footprint also unlocks the Fast Fly option, saving weight on the trail. Choose a model-specific footprint, set it up so it doesn’t extend beyond the tent floor, and you’ll keep your tent in great shape for many seasons to come.