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Sale Price $7.79.
Original Price $8.65 Comp. value
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Brain Rules! Green Head Version Keychain
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Aluminum Circle
+$2.25
+$2.25
+$11.10
+$11.10
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About This Design
Brain Rules! Green Head Version Keychain
Your brain is the single most sophisticated piece of muscular organ you'll ever possess. Without it, you're no different from a vegetable or members of the Amoeba genus. 5 Reasons to Worship Your Brain Now:
> There are about 100 billion neurons in the human brain, the same number of stars in our galaxy.
> Our brain is about 2% of your total body weight but uses 20% of your body's energy.
> The energy used by the brain is enough to light a 25 watt bulb.
> 70,000 is the number of thoughts that it is estimated the human brain produces on an average day.
> More electrical impulses are generated in one day by a single human brain than by all the telephones in the world.
Need More Reason? Order it. Wear it. Prove that you respect for your brain!
Customer Reviews
4.6 out of 5 stars rating5.4K Total Reviews
5,425 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Ali Y.February 4, 2026 • Verified Purchase
Aluminum Circle, 2"
Lovely & cute keychains i love them thank you sooo much ,they also reached to me soo fast 😍.
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Christina J.March 11, 2024 • Verified Purchase
Premium Round, Large
These are a durable metal and the colors are vibrant. One of the clasp came broken but received a new one quickly. Customer service was responsive and quick to resolve the issue. They are bigger than I thought but still work for my wedding. I am satisfied with the print quality and surprised at how vibrant the colors are.
5.0 out of 5 stars rating
5 out of 5 stars ratingBy V.August 21, 2023 • Verified Purchase
Zazzle Reviewer Program
Beyond expectations. Choice of artwork is overwhelming, I found exactly what I needed from SJW_Graphics. Detail, colors, overall design looks great on this keyring. Could use as a pendant, purse charm, bookmark, too! Metal is sturdy without being heavy. Colors beautiful, with clear margins. Customized name makes this gift extra special. So many fonts, so many colors & sizes!
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Product ID: 146687807791055767
Created on: 7/20/2010, 4:33 AM
Rating: G