The biothane collar with clip and bungee makes it so much easier to get the collar on and sized correctly. I really like the bungee for some give when my dog is working and hot.
I have noticed significant improvement in the contact of the collar with the comfort contacts. I could tell that often the contacts that came with the collar would not be both touching his neck.

E-Collar Technologies Winged Comfort Pads

It’s a game changer

These contacts work really well for double-coated dog with thick ruff - Labrador Retriever in my case. Recommended.