Generally, a round collar is suitable for long-haired dogs, and it seems that there is less damage to the coat due to friction with the collar compared to a flat collar.
In addition, it is recommended to replace the collar as soon as possible because it takes about 6 months to replace the collar and it depends on the usage conditions. Check it once a month.
Please prioritize the selection of collars according to your weight.
With Petio, you can find the fashionable and cute collars you want to recommend.

This is mainlyCollar for large dogs up to 25-40kg | CollarCategory.