A back plate for routing a pair of shoulder straps (110a, 100b) of a body harness, the back plate comprising: a body comprising a core and a pair of branches (220a, 220b) extending from the core in opposite directions relative to a longitudinal axis of the body; a pair of lower guide slots (224a, 224b) extending through the core, each of the lower guide slots (224a, 224b) having a first lower guide slot side and a second lower guide slot side contiguous with the first lower guide slot side and arranged at an angle relative to the first lower guide slot side; and a pair of upper guide slots (226a, 226b) extending through the pair of branches (220a, 220b), each of the upper guide slots (226a, 226b) having a first upper guide slot side and a second upper guide slot side contiguous with the first upper guide slot side and arranged at an angle relative to the first upper guide slot side, wherein a first of the pair of upper guide slots and a first of the pair of lower guide slots are configured to route a webbing material of a first shoulder strap therethrough, and wherein a second of the pair of upper guide slots and a second of the pair of lower guide slots are configured to route the webbing material of a second shoulder strap therethrough, characterized in that: the first upper guide slot side and the second upper guide slot side of each upper guide slot (226a, 226b) are arranged at an acute angle relative to each other; and the first lower guide slot side and the second lower guide slot side of each lower guide slot (224a, 224b) are arranged at an obtuse angle relative to each other. a body comprising a core and a pair of branches (220a, 220b) extending from the core in opposite directions relative to a longitudinal axis of the body; a pair of lower guide slots (224a, 224b) extending through the core, each of the lower guide slots (224a, 224b) having a first lower guide slot side and a second lower guide slot side contiguous with the first lower guide slot side and arranged at an angle relative to the first lower guide slot side; and a pair of upper guide slots (226a, 226b) extending through the pair of branches (220a, 220b), each of the upper guide slots (226a, 226b) having a first upper guide slot side and a second upper guide slot side contiguous with the first upper guide slot side and arranged at an angle relative to the first upper guide slot side, wherein a first of the pair of upper guide slots and a first of the pair of lower guide slots are configured to route a webbing material of a first shoulder strap therethrough, and wherein a second of the pair of upper guide slots and a second of the pair of lower guide slots are configured to route the webbing material of a second shoulder strap therethrough, characterized in that: the first upper guide slot side and the second upper guide slot side of each upper guide slot (226a, 226b) are arranged at an acute angle relative to each other; and the first lower guide slot side and the second lower guide slot side of each lower guide slot (224a, 224b) are arranged at an obtuse angle relative to each other. the first upper guide slot side and the second upper guide slot side of each upper guide slot (226a, 226b) are arranged at an acute angle relative to each other; and the first lower guide slot side and the second lower guide slot side of each lower guide slot (224a, 224b) are arranged at an obtuse angle relative to each other.