Tap / click on image to see more RealViewsTM
$30.30
per keychain
Present Is A Relative Concept (Light Cone Physics) Key Ring
Qty:
Style
Aluminum Circle
+$7.90
+$7.90
+$38.80
+$38.80
About Keychains
Sold by
About This Design
Present Is A Relative Concept (Light Cone Physics) Key Ring
Do you often wonder where you are on the time-space continuum? Wonder no further with any of these physics humour geek attitude gifts featuring exactly where an observer is in the present, between the future light cone and past light cone. Make others do a double-take with any of these educational, scientific truism saying gifts which notes that "Present Is A Relative Concept"!
Customer Reviews
4.6 out of 5 stars rating5.5K Total Reviews
5,451 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Ali Y.4 February 2026 • Verified Purchase
Metal Circle Keychain, 5.08 cm
Lovely & cute keychains i love them thank you sooo much ,they also reached to me soo fast 😍.
from zazzle.com (US)
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Christina J.11 March 2024 • Verified Purchase
Premium Round Keychain, Large (5.397 cm)
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.
from zazzle.com (US)
5.0 out of 5 stars rating
5 out of 5 stars ratingBy V.21 August 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!
from zazzle.com (US)
Original product
Tags
Other Info
Product ID: 146301347310020903
Posted on 13/06/2010, 3:12 PM
Rating: G