There are a number of holster options available for the Glock 17, but the most popular option is the IWB (Inside the Waistband) holster. This type of holster offers a number of advantages over other types, including better concealability and easier access to the weapon.
Other popular holster options for the Glock 17 include OWB (Outside the Waistband) holsters and shoulder holsters. Each has its own set of pros and cons, so it's important to choose the right one for your needs. For example, shoulder holsters can be uncomfortable to wear for extended periods of time, but they offer good concealability and easy access to the weapon.