We use two different ones depending on the situation. We use a tactical style with belly coverage for hiking and other outdoor activities where body protection may be needed. It's pretty heavy and Leif isn't a fan of the weight even though he's more than big enough for it not to bother him.

Then we use a light tactical style for every day work. This one has only a single girth band and a chest band, but also has the ability for a mobility U harness to be attached and plenty of velcro for all the patches.

Leif is black and the desert drab shows really nicely on his coat and it's subdued so it doesn't draw any more attention than a 75 black dog already gets.