How to Make an Astronaut Costume with Iron-On Patches

An astronaut is the easiest good Halloween costume there is, because the whole thing is carried by two patches. Put a NASA logo on the chest and an American flag on the shoulder of almost any white or orange garment and people read it instantly. Skip the patches and the same outfit is a painter, a mechanic, or a person in pajamas. This guide covers the base garment, the exact placement, how to attach the patches so they survive the night, and what to do if the costume is polyester (most are).

What you need

• A white, orange or light-blue jumpsuit, coveralls, flight suit, or hoodie-and-sweatpants set. Thrift stores and painter's coveralls from a hardware store are the cheap route.
• A NASA astronaut costume patch set — the black and gold NASA logo plus the gold-border USA flag. Two people, or both shoulders? Choose the 2-of-each option.
• An iron, a thin cotton cloth (a pillowcase works), and a hard flat surface. Or a needle and thread if the garment is synthetic — more on that below.
• Optional: silver duct tape for boot and glove cuffs, a clear plastic bowl or a cheap fishbowl for a helmet, a small backpack painted white for the life-support pack.

Where the patches go

Copy the real flight suit and the costume looks right without anyone knowing why. On NASA's blue flight suits the layout is:

• NASA logo — left chest, roughly over the heart, level with the armpit line.
• American flag — left shoulder, centered on the upper arm about an inch below the shoulder seam.
• Name tape on the right chest and a mission patch on the right shoulder, if you want to go further. A strip of white fabric with a name written in marker does the name tape.

The flag question that comes up every year: which way should it face? On the left shoulder the flag is worn the normal way, stars to the top-left, and that is where a costume puts it. A reversed flag belongs on the right shoulder only, so if you use the 2-of-each set and put a flag on each arm, orient both the same way and nobody will mind.

Check the fabric label first

This is the step that decides whether you iron or sew. Cotton coveralls, a cotton hoodie, or a cotton-blend jumpsuit take an iron-on patch well. Most store-bought astronaut costumes are 100% polyester, and a lot of flight-suit replicas are nylon. Polyester can glaze and shine under a hot iron; nylon melts. If the label says either, sew the patches on. It is ten minutes with a needle and a plain running stitch around the border, and it will outlast the costume. The fabric-by-fabric guide has the full table.

Ironing them on

1. Iron the area flat first, no steam. The patch needs a smooth, dry surface.
2. Position the patch. Step back and check it in a mirror — the chest patch in particular wants to sit slightly higher than feels natural when you are looking down at it.
3. Cover the patch with the cotton cloth. Press with firm, steady pressure for 30 to 45 seconds on a cotton setting. Do not slide the iron around; lift and press.
4. Turn the garment inside out and press the back of the patch area for another 20 to 30 seconds.
5. Let it cool completely before you touch it. The adhesive sets as it cools, and peeling at the edge to "check" is how patches come loose later.

One patch at a time. Full instructions, including what to do when a corner lifts, are in how to apply an iron-on patch safely.

Kids' costumes

The same placement scales down. The NASA logo in this set is about 3 by 2 inches, which sits properly on a child's chest where a large mission patch would swamp it. On a toddler-size garment put the flag on the sleeve rather than the shoulder so it stays visible. Children's costume fabric is nearly always polyester: sew.

Making it look less like a jumpsuit

A few cheap details do most of the work: silver duct tape wrapped around the wrists and ankles as cuffs, white or grey gloves, a white belt, and a small white backpack. The helmet is optional and most adults skip it after the first hour. The patches are not optional. Without them it is a jumpsuit.

Timing

Patches are normally dispatched from Raleigh, NC within two business days, with tracking. Carrier transit times vary, and delivery by a particular date is not guaranteed. If you need patches for a specific event, contact us before ordering. Tracked U.S. shipping is $4.95 for orders under $20 and free at $20 or more, after discounts and before taxes. The $19.99 two-patch set does not meet the free-shipping threshold on its own.

Browse the rest of the Halloween costume patches or the full NASA and space collection.