Whenever I introduce a new gear (even mine) to Xena, I make sure it’s a positive experience for her. She is food motivated so treats are all I need usually. First I let her sniff the gear as long as she needs then give her a treat or praise. While putting the gear on her, she gets a treat before and after. In this picture, I am holding her treat between my lips so she can see her reward. Notice her tail is wagging here in a neutral way (not too high or too low, showing no stress) when she is trying on the goggles for the first time. This helps her to associate the goggles with a positive experience and she will let me put it on her again next time.
Photo credit: Robinventures