Your holster securely holds your weapon against your body, and it is the only thing separating you and your weapon. Improper holsters may result in safety concerns, including unintentional misfires, slow draws and discomfort.
Carry type
Try out holsters in different positions. Be sure you move around, bend and jump or run as you are wearing them. Then, try drawing your firearm from each holster position to determine which are the most natural. Although you may be most comfortable from one draw position, consider purchasing multiple holsters for different events or clothing options. For example, you may choose a concealed ankle holster for a backup weapon.
Materials
Your holster should be made of high-quality materials. For example, leather holsters last a long time and do not warp. However, they can loosen up over time. In addition, they are quite stiff initially, so they need to be broken in. Leather is typically comfortable to wear and conforms to both you and your weapon. Plastic or fabric holsters may be affected by time, heat and other factors. Some holsters may also have fabric layers on the side that lay against your skin, improving your comfort.
Retention
How easily can you present on your weapon? Before you draw, you need to have a firm grip on your weapon. Your trigger should be covered by the holster, but your weapon should slide smoothly out of your holster. However, it should not fall out or easily slip out of the holster because this could be a safety concern. For example, someone may be able to grab it or jostle it loose if the holster is too slack.
Your holster should fit your weapon and you. Purchase high-quality holsters that are comfortable and secure. As you become adept at drawing your weapon from one holster, consider purchasing others to give you some flexibility.