It’s summertime, and many Americans are looking forward to much-needed vacations. As they book their flights or reserve their hotel rooms, there’s a good chance someone will ask them the following question:

“Would you like to add travel insurance to protect your trip?”

A number of folks jump at this offer, out of fear or simply out of impulse, and the U.S. Travel Insurance Association estimates that about $1.9 billion in policies are sold annually, according to the most recent numbers.

So should you add travel insurance to your trip? And if so, what should you look for in a policy?

Types of Travel Insurance Coverage

The good news is that providers offer a menu of services, from which consumers pick and choose.

Some of the most common options:

•Medical. If you have ever come down with a bad stomach bug and got frustrated locating a gastroenterologist in your hometown, just imagine that search in the jungles of Cambodia. Medical travel insurance can help provide coverage to limit out-of-pocket costs.

•Evacuation. If you’re abroad and must deal with a natural disaster or political unrest, getting to a safe place in a strange land is a harrowing experience. It can also be incredibly expensive. Travel insurance can help cover the cost of getting out of harm’s way.

•Cancellation. More painful than suffering a last-minute injury that ruins your trip can be the realization that you can’t get back the big bucks you paid for travel arrangements or a tour. This kind of travel insurance also covers cancellations due to other problems, including if your tour provider goes bankrupt or an airline delay causes you to miss your event.

•Baggage. Nothing ruins a vacation faster than lost, damaged or stolen luggage. But at least being covered will provide some reimbursement for that new bathing suit you’re forced to buy upon arrival.

•Death and dismemberment. Similar to typical life insurance, this option provides your heirs with a payout should you die during your trip.

Should You Buy Travel Insurance?

If you’re a worrier, it’s difficult to put a price tag on peace of mind. But even the most nervous of travelers should think twice about certain areas of travel insurance, because the benefits are extremely limited or because you may be covered elsewhere.

The easiest one to pass on is death coverage, sometimes referred to as “crash insurance.” Plane crashes are so rare that even a small charge for this kind of coverage isn’t worth it. Besides, if you’re a young parent truly worried about your own mortality, a good term life insurance policy is probably the way to go.

A bit more complicated but worth looking into is the question of whether you are already covered.

Dig into the details of your destination with your health insurer. I was encouraged to learn that my personal CareFirst insurance would cover me at about 60 different hospitals around Antwerp, Belgium. Good to know for when I plan my European tour!

It’s also worth exploring any insurance coverage you may have as part of your credit card. American Express is well-known for its perks, for instance, and some premium cards offer coverage for lost luggage or flight cancellations — as long as you swipe your AmEx to pay for the trip, of course.

Then there’s the question of just what you’re insuring.

For instance, the U.S. Department of Transportation limits lost baggage claims to $3,300 — and when airlines do reimburse you, it always accounts for depreciation. So your skis or golf clubs may be worth covering with travel insurance. But a small bag with a bikini and sandals? Maybe not.

The same is true for medical insurance or evacuation. If you’re going bungee jumping, it might be wise to take out some extra insurance — and some providers have a specific clause for “adventure sports.” But if your worst risk is not applying enough sunblock at the beach, that’s a different story.

Jeff Reeves, Special for USA TODAYPublished 1:34 p.m. ET June 20, 2015