"I own a 16lb. pug and have used this carrier for 6 round trips (lasting an average transit time of 5 hours).
Pros: In terms of design your pet can enter the travel bag in two ways (from the top or from the side). The side opening is a convenient feature, as during the flight I like to open it up for more air circulation. Having the "Delta" logo gives you & other airline employees assurance that your pet carrier meets the guidelines.
Cons: This pet carrier is Delta endorsed, and yet it does not properly fit underneath a Delta airline seat. It has to be "shoved" underneath. With an airline endorsed pet carrier, you would assume that the carrier fits, it does not. Also, on oneside of the carrier, there is mesh material for breathing. My pug has ripped through that.....leaving a few gapping holes on it.
I think it's time for another carrier. I will not be purchasing from Sherpa/Delta."