Quick question about Qinux Dogitek collar size for a medium dog?

I had the same worry when I got one for my aussie mix, who’s right around that same weight. Honestly, I almost didn’t order it because I thought the strap would be bulky or hang weird on her neck. But it’s actually got a decent amount of adjustment room, so I didn’t have any trouble getting it to sit snug without being tight.

She wears it for a few hours most days, not all day, but I’ve forgotten to take it off after training a couple of times and she didn’t seem bothered. The contact points sit fine against her fur, no chafing or anything. I was more worried about the receiver being too heavy and flopping around, but it stays put pretty well.

My only small complaint is that I wish the strap had a bit more padding, but that’s me being picky. For a 20 kg dog I think you’ll be fine. My girl is maybe a touch leaner than a border collie and it fits her well, so I’d say go for it. If anything, I’d rather have it slightly too big than too small, since you can always tighten it. Just make sure you’ve got two fingers of space under it and it should be comfortable for normal wear.

I think your border collie will be okay with it. My dog is about 17 kg and the strap still has room to tighten further, so it’s not like it’s hanging loose or anything. The buckle part sits snugly enough that it doesn’t slide around when we’re out walking, but I also don’t have to crank it down to the last hole. For a 20 kg dog you’d probably be right in the middle of the adjustment range, which feels like the sweet spot honestly.

The only thing I noticed is that the contact points press a bit if the collar is too tight, but that’s more about how you position it than the size itself. I just make sure it’s not choking him and it’s been fine for daily wear. I wouldn’t overthink the sizing too much.

Strap has a decent amount of adjustment, but the receiver box itself is kind of bulky. My 22kg mutt wears it fine, it doesn’t flop around or rub, but I also wouldn’t call it invisible. You’ll know it’s there. Probably fine for a collie, just don’t expect it to feel like a normal flat collar.

We’ve got a 23kg lab mix and the collar fits him without much fuss. The strap has enough holes to get a snug fit, not too tight, not sliding around. My only small gripe is the receiver unit sits a bit proud of his neck, so it can look a little bulky under his fur, but he doesn’t seem to notice it during the day.

I was more worried about the contact points digging in, but they haven’t been an issue so far. We leave it on him for a few hours at a time, mostly for off-leash work, and he’s never tried to scratch at it or shake it off.

For a 20kg border collie, I’d guess you’ll be fine. If anything, the strap might have a little extra length left over, but that’s better than it being too short. I wouldn’t overthink it.

Honestly, my first thought when I saw the size was the same as yours. My dog is around 19kg and I spent a good five minutes fiddling with it before putting it on him. The strap itself is fine, there’s enough room to adjust it, but the receiver part is where I had to stop and think.

It doesn’t sit as flush as I expected. There’s a bit of a gap between the contact points and his neck unless I tighten it more than I’d like. During the first week, he kept scratching at it while we were just hanging out at home. I thought it was going to be a daily battle, but he got used to it after a few days. Now he only notices it when I pick up the remote.

I don’t think it’s a dealbreaker, but I wouldn’t call it super comfortable either. It’s more like wearing a slightly bulky watch. It works, it stays in place, but it’s not something he forgets about entirely. If your collie has a thicker coat, you might not even notice the gap issue. My dog has shorter fur, so I can see exactly where it presses.

I’d say try it, but keep an eye on how it sits after a few hours. I had to readjust the position a couple of times during the first week until we found a spot that didn’t bug him.

I think as long as the strap has room to adjust you’re probably fine. My only thing is I wish the remote felt a bit more intuitive, took me a few days to remember which button does what without looking at the screen every time. But the collar itself never felt like a chore to put on.