The size and functionality of this kettle is great!  I like the button on the handle that opens the spout, and the whistle is definitely loud enough to hear even when you're not in the kitchen.  The only thing I was a bit surprised about (and the reason for 4 stars instead of 5 stars) was the color.  I ordered the Metallic Cobalt Blue which is a beautiful medium color blue on my computer screen, but when the kettle arrived it is a much darker color (almost navy or purplish).  It wasn't a big enough deal for me to send the kettle back, so I kept it.  But just keep in mind that the blue kettle may be darker in color than it appears on the website.  Other than that, I am glad I bought this kettle and definitely recommend it!