i have a bull mastif would the xlarge fit him
1318468
I would go with the largest I could find. A bull mastiff is a larger breed than my chow and the collar is adjustable.
646848
I have a 1/2 black lab 1/4 pitbull 1/4 Rhodesian ridge back . The thunder shirt works for my dog. (he looks very pitbull) he's so much more "calm balanced" when I use the Thundershirt. Hope this helps.
1824342
It fits my 50 pound, chubby female pit bull. And it's big on her. So it should fit your dog no problem. It stretches out really badly though. I wish I would have bought a med.
432008
Yes if you go by the size chart of his back length, you will be ok, I bought this for my shih tzu and he loves it!
2111500
Yes, it fits my Jack Russell nicely (and works amazingly well!). The collar allowance is quite long so just fit to your dog's size and then cut the excess. You will then have to put glue on the end piece as it frays quite a bit. Works perfectly.
1651721
It has a very adjustable fit, it will accommodate any large breed. I have a English setter with a narrow but long chest bone and I was worried about not being able to fit him but it works great, and the price was great it is just as good as any of the $60.00 jackets we looked at.
1764426
I believe it will. We have a boxer mix and it fits him without any problems.
1270377
You'd probably be better off with the large just because of your Mastiff's height. There's only a few inches of room when my 55 pound, taller than most pit bull stands up in it.
377684
We got the xlarge and have a male Maltese @ around 11-12lbs. He can see out but the basket is a little too big for him.
18206
My dog is the exact same size. He is a boxer/lab mix..exact same chest and weight, and the medium fits perfectly. I actually got it when he was 29 and it fit him great and he grew into it nicely. This pack is awesome man. Used it with him today on a 7 mile hike.
2039044
I purchased the XL for a slender 70 pound shepherd and 60 pound lab mix and it fit them perfectly. So you can sort of go from there.
878997
According to the manufacturer, the XL size will fit a dog with 34"-46" chest... I'd measure before ordering. I gave one to my brother for his very overweight black lab and I'm told it fits fine. They're adjustable in 3 places which I've found helpful.
1931038
I have a pom and it fits him. you can cut that strap if the end is tooo long.
1952992
Probably, mine is an 8# Maltese/Yorkie cross. Fits fine. Didn't take hime long to figure out when the collar was on or off. He changes his behaviour accordingly.
1981568
Yes. Fits a 60 lb. English bulldog with several more inches of room for larger necks.
619564
I have a 45lb American Pit Bull and the large fits her. Since bully breeds can sometimes have wide chests, I measured my dog's chest girth, neck, and back then went to the Outward Hound website to look at the sizing chart to find the best size. The website says the chest girth is the most important probably because the chest straps have the least room for adjustment. Good luck! It's a great backpack :-) http://www.myoutwardhound.com/2490.html
1929129
Get a large size I have a 70lb Boxer Dane Mastiff mix.Medium neck isn't big enough and he isn't big even though his breed suggest he is.