K9 Axel - A Retired Working Dog That Needs our Help

Jun 21, 2018 |
Heroes come in all shapes and sizes -- and species. Nine-year-old K-9 Axel is a German Shepard with a resume that re...
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Flash, A True Hero

Apr 2, 2018 |
Just hours away from her death, Flash received an opportunity to fulfill a purpose she was destined for: to be a K-9 ...
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Herding Birds, Finding Purpose

Mar 26, 2018 |
We love seeing dogs find purpose. One organization helping dogs do precisely that is Flyaway Geese, an organization ...
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New Sizes: Rex Specs for Everyone!

Feb 14, 2018 |
For the last year we’ve been working on the development of four new sizes. Our goal was to make sizes that would fit...
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2018 Changes to Size Small (Wide)

Feb 1, 2018 |
A few changes to announce in the new year! Firstly, the name of the size Small goggle has changed to "Small Wide." ...
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Honoring Piper the Airport K9

Jan 10, 2018 |
Last week we had to say good bye to Piper the Airport K9. Piper not only excelled in his work but he brought people ...
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Equipment Review - Rex Specs in Working Dog Magazine

Jan 10, 2018 |
We'll be bringing you a full Working Dog Magazine Article of the Month shortly but first we wanted to share this rec...
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Success! MWDTSA Record Breaking Campaign!

Jan 2, 2018 |
We closed out 2017 with a very successful donation campaign for the Military Working Dog Team Support Association (M...
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Vet Check: Your K-9 Partner's Annual Wellness Exam

Nov 9, 2017 |
"Vet Check" is the second edition of our Working Dog Magazine Article of the Month series. Rex Specs has partnered ...
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For the Love of Brody: Part III - The Bond

Nov 7, 2017 |
This is Part III of our "Forever Dog" series. If you haven't read Part I and Part II of Brody's story yet, check the...
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For the Love of Brody: Part IV - The Battle

Oct 31, 2017 |
  This is Part IV of our "Forever Dog" series. If you haven't read Part I, Part II and Part III of Brody's story yet,...
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Protecting the President: The Critical Role of Military K-9’s

Oct 24, 2017 |
One of our favorite stories over the past few months was getting to know Monica Rodriguez, a Security Forces K-9 han...
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Rex Specs

measure your dog in two steps

  1. muzzle circumference

    Measure the circumference of your dog's muzzle where you expect the goggle to land on their nose - usually around the back of their mouth.

  2. head circumference

    Measure the head circumference where you expect the goggle to land on the forehead - typically an inch or so behind the eyes.

Watch Sizing Video
Goggle Size Head Circumference Muzzle Circumference
X-Small Less than 10.5 in Less than 6 in SHOP X-Small
Small 10.5 in - 12 in 6 in - 8 in SHOP Small
Medium 12 in - 14 in 8 in - 9in SHOP Medium
Large 14 in - 17.5 in 9 in - 11.5 in SHOP Large
X-Large Greater than 17.5 in Greater than 11.5 in SHOP X-Large
Small Wide* 12 in - 15 in 6 in - 9 in SHOP Small Wide

*Designed for dogs with a wide, flat face i.e. Boston Terriers
If your dog is between sizes, select the larger size: This will insure the most functional fit and optimal field of view.


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