Cold Activated Oxygen Absorbing Bottle Caps

Cold Activated Oxygen Absorbing Bottle Caps

Please select from the following option(s) to see pricing and availability.

Cold Activated 26mm crown bottle caps. These caps will turn blue and display a "Ready To Drink" message when they reach a cold enough tempearture (41°F)! These caps also have an oxygen absorbing liner that will absorb any oxygen left in the headspace. This helps reduce the oxidation that happens during the bottling process, keeps your home brewed beer tasting fresher, and can extend it's shelf life.

Important to note: It is recommended that you only sanitize as many caps as you'll require at the time of bottling. The oxygen-absorbing agent is activated when the cap gets wet. If wetted caps are saved for later use, they'll still function as a normal cap, but the oxygen absorbing agent may be depleted.


Community Q&A

Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!
Why did you choose this?
MoreFlavor Store
Need caps. Fun feature that is not that expensive
Paul L on Jul 21, 2020
Mike B on Jul 10, 2020
Need caps. Fun feature that is not that expensive
Paul L on Jul 21, 2020
cool idea
Nick Wright on Jul 14, 2020
Mike B on Jul 10, 2020
Sounded fun
Roxanne F on Jul 4, 2020
I like the idea of knowing when it's cold enough to drink and so will my friends
Timothy F on Jun 26, 2020
Just cool
Gus A on Jun 17, 2020
Fun caps for bottling.
Barry G Dreher on Jun 12, 2020
Use them all the time for bottling my beer
William S on Jun 11, 2020
looked cool and thought I would give them a try
Devin Diedrich on Jun 9, 2020
to bottle my season beer
Ariel Zelaya on Jun 1, 2020
Like the idea of the cold indicator
Daniel I on May 21, 2020
Pretty cool idea
ANTHONY K on May 18, 2020
Because they're cool!
BRAD A P on May 16, 2020
cause beer on the caps are awesome
Jacob H on May 6, 2020
Looks cool!
Dale Z on Apr 28, 2020
The cold activation
Aric P on Apr 17, 2020
great quality at great price!
shaun d on Apr 17, 2020
Good deal and let you know when beer is cold
Timothy M on Apr 9, 2020
Seemed like these would be cool to use to know when beer is cold enough
Matthew P on Apr 9, 2020
Reminds me of the mountains being blue
Paul Westhoff on Apr 6, 2020
Cause they are cool
Justin J on Apr 5, 2020
They look cool
Jake M on Dec 28, 2019
Christmas gift
Burr W on Dec 12, 2019
Stocking stuffers
Stacy Y on Dec 7, 2019
A little more fun than standard caps
Clarke M on Nov 19, 2019
Cheaper than other comparable sites
Sean H on Oct 23, 2019
USB compatible
Kevin Keck on Jul 16, 2019
They're more fun than plain colors!
Mack E on Jul 6, 2019
Looked cool and different
Christian M on May 23, 2019
it's novelty
Tracy B on May 6, 2019
Caps. Is there anything cooler? Not into flag caps.
Benjamin C on Apr 28, 2019
very cool
Patrick U on Apr 8, 2019
nice feature, cool
Roger H on Mar 9, 2019
Great reviews, fun design
Lynn M on Jan 11, 2019
I like them
Martin H on Jan 8, 2019
Like the cold activation aspect.
Theodore Nowicki on Nov 19, 2018
Fun to see the color change!
CEDAR VALLEY-JON W on Oct 17, 2018
I like to have a variety of caps to tell what I still have on hand.
Eric S on Oct 16, 2018
handy to tell when they are cold
Michael c on Sep 26, 2018
cool cold activated stuff
Tim F on Sep 1, 2018
There are pretty cool caps
Larry D on Aug 29, 2018
Need to cap the bottles
Brad J on Feb 27, 2018
wanted something different than just plain colors that I already have - novelty
Paul K on Feb 23, 2018
cool idea
Nick Wright on Jul 14, 2020
Sounded fun
Roxanne F on Jul 4, 2020

5.0 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Artistic and functional
These caps work well and look good.
May 16, 2019
1 year ago
It's such a small premium over the non-cold-activated caps that it's worth it for the feature
January 15, 2019
1 year ago
Work as expected
Not sure what else to say other than they work as they should.
April 4, 2018
over 2 years ago
cold activated oxy caps
Excellent cap what more can you ask for turns blue to let you know your beer is cold.
March 15, 2018
over 2 years ago
cambian de color con el frío, funciona perfecto
January 27, 2018
over 2 years ago