A paintball harness has a support plate with a rear surface that faces toward a user's lower back when the harness is worn by the user. A pair of primary straps extend from opposite ends of the back plate and can extend about the user's waist and removably couple to each other when the harness is worn by the user. The harness has a pair of secondary straps attached to the rear surface of the support plate and extend through a pair of openings in the support plate. At least a portion of the pair of secondary straps are elastic, the pair of secondary straps configured to releasably couple to a front surface of the pair of primary straps. A plurality of holsters attach to the support plate, each holster defining a channel that resiliently receives at least a portion of a pod of paintballs therein. The pair of secondary straps can be stretched while detached from the pair of primary straps to adjust a tension of the harness on the user and can be coupled pair of primary straps in the stretched position, where increasing the stretching of the secondary straps further pulls the support plate against the user's back when the harness is worn by the user.