Size

Field Guard sizes to fit every dog

Good Fit ⇒ Comfort ⇒ Easy Acceptance!

A well fit Field Guard is easily accepted by most dogs because it is engineered for comfort. The correct size allows room for the dog to open his mouth and pant, and for air circulation around the face that is necessary for cooling. If you want the best fit for your dog use these measuring instructions for exact sizing.

Regular or "O" size?

Dogs with furry faces, extra long ears, or a blocky heads require an “O” size to allow space for necessary air circulation and cooling.  All other dogs are regular size.  

"O" Size Chart is below the Regular Size Chart.

 PUPPY size is based on current head length.

Regular Size Chart

Breed examples below are only a rough guideline.

Dog Type Size Head Length Breed Examples
XXS size Field Guard
XXS 5½-7 in
14-18 cm

Chihuahua, Miniature Dachshund
(no smaller than 9 lbs.)

XS

7-8¼ in
18-21 cm

Cairn Terrier, Cavalier (sm), Jack Russel, Norwich Terrier
S

8¼-9½ in
21-24 cm

Beagle, Brittany Spaniel, Jack Russel, Sheltie
M size Field Guard
M

9½-11½ in
24-29 cm

Australian Shepherd, Border Collie, Vizsla, Labrador, Greyhound
L size Field Guard
L 11½-13½ in
29-34 cm

Doberman, German Shepherd, Weimaraner

GIANT size Field Guard
XL

13½-15½ in
34-39 cm

Great Dane, Iris Wolfhound

If your dog’s measurement is on the borderline between sizes….
     XXS&XS, XS&S choose the smaller size
     S&M, M&L, L&XL choose the larger size

"O" Size Chart

Dogs with furry faces, extra long ears, or a blocky head require an “O” size to allow space for necessary air circulation and cooling.
Breed examples below are only a rough guideline.

Dog Type Size Head Length Breed Examples
XSO
    5½-7 in
    14-18 cm

    Toy/Miniature Poodles & Doodles, Pug (sm), Cavalier (sm)

    SO

    7-8¼ in
    18-21 cm

    Cavalier, Pug, French Bulldog
    MO

    8¼-9½ in
    21-24 cm

    Boxer, Pit Bull, Doodle
    LO

    9½-11½ in
    24-29 cm

    Basset Hound, Bernese (sm), Doodle (std), Rottweiler, English Lab, English Bulldog, Wheaton Terrier, Scottish Terrier
    giant size
    XLO 11½-13½ in
    29-34 cm
    Bloodhound, Great Pyrenees, Mastiff, Saint Bernard

    If your dog’s measurement is on the borderline between sizes….
          XSO & SO, choose the smaller size
         MO & LO choose the larger size

    Need Help Choosing a Size?
    For additional assistance, email us at hello@outfoxfordogs. Please include head length, weight, and a photo of your dog.

    Adjusting for Fit
    The correct fit is as important as size for your dogs comfort and acceptance of the Field Guard.  Download the OutFox Comfort Guide  for how to create the best fit for your dog.