Yeti glasses or any other type of thermos are a great way to keep your drinks cold. But you might find the stainless steel exterior a bit boring. Luckily, Yeti glasses are easy to personalize with spray paint. Choose the color you want, prepare your glass, and add a few coats of paint so that your Yeti glass is not only functional, but a reflection of your personality. If you don't have a Yeti tumbler, use whatever stainless steel thermos you have.
Steps
Part 1 of 3: Preparing the glass for painting

Step 1. Sand the glass with fine-grit sandpaper
Sand the glass lengthwise until smooth to the touch. The smoother, the easier it will be to apply paint evenly. If it wears out, simply replace the sandpaper.

Step 2. Clean the glass with soap and hot water
Use a sponge to spread the soap around the outside of the glass. After cleaning, pat dry with a clean towel until no wet spots remain.

Step 3. Put blue painters tape around the edge and any other areas you don't want to paint
By putting this type of tape on the rim of the glass, you will ensure that your mouth does not touch the paint when you drink. There are no other areas that need to be covered, but you can apply painters tape wherever you want the original finish to remain intact. For example, you might want to tape around the bottom of the glass, so there would be 2 unpainted areas framing the painting.

Step 4. Apply vinyl decals if you want to paint a design on your glass
Vinyl decals act as a stencil for spray paint and will help you put creative and fun designs on your glass. Put the logo of your favorite team, your name, or the silhouette of an animal that you like. Look up vinyl decals on the internet and be as creative as you want with them!

Step 5. Cover the opening of the glass with plastic
You will need to make sure that no paint gets into your Yeti cup, as it can be dangerous to ingest. Put plastic wrap over the opening of your glass and hold it in place with rubber bands or painters tape. You could also seal the lid in a ziploc bag and then put it on your glass.

Step 6. Put the glass in a well ventilated area
A backyard or garage workplace is often best when using spray paint. Wherever you go, make sure you don't breathe in too much paint fumes while you work. Also make sure you are away from valuable things that you don't want to get paint stained.

Step 7. Turn the glass upside down on a poster board or canvas
Make sure the glass is stable and level so it doesn't fall over while you paint. Turning the glass upside down will help keep the paint out of it. Card stock or tarp will help you keep the area where you work clean.
Part 2 of 3: Apply the paint

Step 1. Shake the aerosol can before using
Shaking the can will help the ingredients mix well before using the paint. In addition, it serves to prevent the can from splashing in an unusual way on its first use. Shake the can for 10-15 seconds, or as long as the directions say.
Step 2. Hold the paint can about 1 foot (30 cm) away from the glass
If you spray too closely, it will be difficult to get an even coat. Also, the paint is likely to run off rather than set.

Step 3. Spray a thin layer of paint on the glass
Spray the glass from top to bottom and not from side to side. Don't try to get the glass as covered as you want it to in the first coat of paint. Applying several thin coats will help you achieve your desired consistency. As soon as you've sprayed everything outside, stop. Don't touch up areas unless you've completely forgotten about them.
- If you have the space, just walk around the glass to apply paint everywhere.
- Otherwise, put on a glove and turn it slowly while spraying with your other hand.

Step 4. Let the paint dry for at least 10 minutes
You will need to wait until the first coat of paint dries before you can apply more paint. The paint should be dry in about 10 minutes, still check your can for specific information.

Step 5. Apply at least 2-3 additional coats of paint
You can apply all the layers you want until the glass is as you have planned. Always let the paint dry before adding another coat.
Part 3 of 3: Finish the job

Step 1. Apply a coat of polyacrylic sealer
The sealer will help protect your paint job and make the glass feel smoother to the touch. Use a small paintbrush to apply a coat of sealer over the entire painted surface of the glass.

Step 2. Let the sealer dry for at least 15 minutes
Check the sealant can for specific information on how long it takes to dry. As with paint, you will need one coat of the sealer to dry before applying another.

Step 3. Apply 2 to 3 additional coats of sealer
You will need a total of 3-4 layers. Apply a quarter if you think the glass should feel smoother or if you are particularly concerned about protecting the paint finish.

Step 4. Remove the painter's tape and vinyl decals if you applied them
If you can't remove the decal with your nails, use the edge of a scissors or tool to begin removing them. Once you've removed all of them, your chosen design will be left as an unpainted area.

Step 5. Let the glass rest for 24 hours before drinking from it
After 24 hours, everything should be dry and your glass ready to use. If you like how it turned out, ask your family and friends if they'd like you to paint their Yeti glasses!
Advice
Keep spray paint cans away from heat sources. Paint cans can explode if they get too hot, so don't leave them near anything that emits heat while you're working. Do not store them in hot places when you finish using them
Warnings
- Never spray paint into a flame.
- Make sure not to apply paint or caulk to the rim of the glass, they can be dangerous if swallowed.