Inflating Your Exped Megamat: A Simple Tutorial

Quick answer

• Know your Megamat model. Different versions have different valves.
• Use the included pump sack. It’s designed for maximum efficiency.
• Inflate in stages. Don’t try to do it all at once.
• Check for leaks. Listen for hissing.
• Adjust firmness. Don’t over-inflate.
• Deflate properly. It makes packing way easier.

For optimal inflation, always use the included pump sack. If you need a replacement or a spare, consider investing in an Exped pump sack.

What to check first (do this before you drive out)

Before you even think about setting up camp, a few things need a quick once-over. This saves you headaches later.

• Land manager / legality: Who’s in charge here? Is it National Forest, BLM land, a State Park? Each has its own rules. A quick look at their website or a call can save you from trouble. I always check the local ranger district page if I’m somewhere new.
• Access/road conditions: Can your rig actually get to where you want to be? Paved roads are one thing, but forest service roads can turn into mud pits or washboards fast. Check recent reports if you can, or just be prepared to hike a bit if things get gnarly.
• Fire restrictions + weather + wind: This is huge. Fire bans are common, and for good reason. Also, check the forecast. High winds can make setting up a tent a wrestling match, and rain can make everything miserable.
• Water plan + waste plan (Leave No Trace): Do you have enough water for drinking, cooking, and cleaning? And what about your waste? Pack it in, pack it out. This is non-negotiable. Make sure you know where the nearest facilities are, or how you’ll handle human waste if you’re in the backcountry.
• Safety (wildlife, distance to help, comms): What kind of critters are around? Know how to store food properly. How far is the nearest town or ranger station? Cell service is often spotty, so let someone know where you’re going and when you expect to be back.

Step-by-step (field workflow)

Here’s the drill for getting your Megamat ready for a good night’s sleep. It’s pretty straightforward once you’ve done it a couple of times.

1. Unpack and inspect:

• What to do: Lay your Megamat out on a clean, flat surface. Give it a quick look for any obvious damage.
• What “good” looks like: The mat is intact, no visible holes or tears.
• Common mistake: Rushing this. You might miss a small puncture that’s a pain to find later. Avoid it by taking a moment.

2. Locate the valve:

• What to do: Find the inflation valve. Most Exped mats have a one-way valve system.
• What “good” looks like: You’ve identified the correct valve for inflation.
• Common mistake: Trying to inflate through the deflation valve. This won’t work and can be confusing.

3. Connect the pump sack:

• What to do: Attach the included pump sack to the inflation valve. Exped mats usually have a specific nozzle on the pump sack that fits snugly.
• What “good” looks like: A secure, airtight connection between the pump sack and the mat.
• Common mistake: Not pushing the connection all the way on. This leads to air escaping and a lot more effort.

Ensure you have your Exped pump sack ready. This essential tool makes inflation quick and easy.

4. Inflate the pump sack:

• What to do: Hold the opening of the pump sack open and scoop air into it. Then, quickly close the opening and squeeze the air into the mat. Repeat.
• What “good” looks like: The pump sack is filling with air and then emptying into the mat with each squeeze.
• Common mistake: Not closing the pump sack opening quickly enough. You lose a lot of air back into the atmosphere.

5. Fill the mat partially:

• What to do: Continue using the pump sack until the mat is mostly inflated but still a bit soft. You’ll see it start to take shape.
• What “good” looks like: The mat is firm enough to hold its shape but still has some give.
• Common mistake: Over-inflating at this stage. It makes it harder to adjust later.

6. Top off by mouth (if needed):

• What to do: For the final bit of firmness, you might need a few breaths. Close the valve quickly after each breath.
• What “good” looks like: You’ve added just enough air to reach your desired firmness.
• Common mistake: Taking too many breaths. This can make the mat too firm and uncomfortable.

7. Close the valve:

• What to do: Once you’re happy with the firmness, securely close the inflation valve.
• What “good” looks like: The valve is shut tight, and you don’t hear any air escaping.
• Common mistake: Leaving the valve slightly open. This will lead to a deflated mat by morning.

8. Test and adjust:

• What to do: Lie down on the mat. Does it feel right? Too firm? Too soft?
• What “good” looks like: You’re comfortable. You can add or release a little air if needed.
• Common mistake: Not adjusting. A slightly too firm or too soft mat can ruin your sleep.

9. Deflate (when packing up):

• What to do: Open the deflation valve (usually separate from the inflation valve). Let the air out. You might need to roll the mat to push out the remaining air.
• What “good” looks like: The mat is mostly flat, making it easy to roll.
• Common mistake: Not getting all the air out. This makes packing a real challenge.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Not checking the valve type	Wrong pump attachment, confusion	Identify your mat model and valve type beforehand.
Using your mouth for primary inflation	Condensation inside the mat, less efficient	Use the pump sack. Use your mouth only for minor adjustments.
Over-inflating	Uncomfortable sleep, potential damage to seams	Inflate in stages, test by lying on it.
Under-inflating	Bottoming out, cold ground	Top off with a few breaths until firm but still comfortable.
Not closing the valve fully	Slow deflation overnight	Double-check the valve is sealed tight after inflation.
Rushing the deflation	Bulky, hard-to-pack mat	Open the deflation valve and roll firmly, pushing out all air.
Inflating on sharp objects	Punctures, leaks	Clear your setup area of rocks, sticks, and sharp debris.
Forgetting the pump sack	Frustration, exhaustion trying to blow it up	Always pack the pump sack with the mat.
Assuming all mats are the same	Incorrect technique, wasted effort	Read your specific mat’s instructions.
Not letting it “rest” before sleeping	Mat might sag a bit as it settles	Let it sit inflated for a few minutes before fine-tuning firmness.

Don’t forget your Exped pump sack! It’s specifically designed for efficient inflation and will save you a lot of effort.

Decision rules (simple if/then)

• If the mat feels too hard, then release a little air because comfort is key.
• If you can feel the ground through the mat, then add more air because insulation is important.
• If you’re using a very old Exped mat, then check its specific valve type because older models might differ.
• If you hear a hiss, then check the valve and pump connection because there’s a leak.
• If you’re in a hurry, then focus on getting it mostly inflated and worry about perfect firmness later because getting set up is the priority.
• If you’re packing up in the rain, then try to get the mat as dry as possible before stuffing it because mold and mildew are bad news.
• If you’re at high altitude, then you might need slightly less air because the air pressure is different.
• If you have a partner, then take turns pumping because it’s faster and less tiring.
• If you’re unsure about the pump sack connection, then give it a good wiggle and pull to ensure it’s secure because a loose connection is wasted effort.
• If the mat feels lumpy, then try deflating it slightly and reinflating, ensuring the air is distributed evenly because sometimes it settles weirdly.

FAQ

How long does it take to inflate an Exped Megamat?

With the pump sack, it usually takes about 2-4 minutes of active pumping to get it mostly inflated. Fine-tuning might add another minute.

Can I just use my lungs to inflate it?

You can for a few breaths to top it off, but it’s not recommended for the whole process. It’s less efficient and can introduce moisture. The pump sack is your best friend here.

While you can top it off by mouth, the Exped pump sack is far more efficient and prevents moisture build-up.

What if I lose the pump sack?

Exped sells replacements, or you can sometimes fashion a makeshift one from a lightweight dry bag and some tape, but it’s a hassle. Best to keep track of it.

My mat feels saggy in the morning. What’s up?

Most likely, the valve wasn’t sealed completely, or there’s a very tiny leak. Double-check your valve closure and listen for any hissing.

How firm should my Megamat be?

It’s personal preference. Generally, you want it firm enough that you don’t feel the ground, but soft enough that it contours to your body. Too firm can be uncomfortable.

Can I use a battery-powered pump?

Some people have success with small, portable pumps designed for inflatables, but they need to be compatible with the valve size. The Exped pump sack is usually the most reliable and efficient method.

What’s the best way to clean my Megamat?

Use a mild soap and water solution with a soft cloth. Avoid harsh chemicals. Let it air dry completely before storing.

How do I store my Megamat long-term?

Loosely rolled or unrolled, in a dry place, away from direct sunlight and extreme temperatures. Don’t store it compressed.

What this page does NOT cover (and where to go next)

• Detailed repair instructions for major punctures.
• Specific campsite reservation systems or fees.
• Advanced backcountry sleeping systems.
• Long-term material degradation and care.