A saddle mount (104-1; 104-2) that adjusts to a bundle diameter, the saddle mount comprising: a mounting section that is attachable to a supporting structure to secure the saddle mount (104-1; 104-2) to the supporting structure; and a saddle section: defining a mounting surface and an aperture for receiving a cable tie configured to wrap around and secure a bundle to the mounting surface; having a base portion connected to the mounting section, the mounting section extending from a surface of the base portion of the saddle section that is opposite the mounting surface; and having a mounting portion comprising: a bridge section connecting two laterally spaced and substantially parallel support rails to support the mounting surface of the saddle section for abutting the bundle; and first and second distal flexible tabs: laterally-extending from opposing lengthwise sides of the bridge section; being aligned with the support rails; having a thickness tapered from a proximal end connected to the bridge section to a distal end; and configured to flex to conform to the diameter of the bundle based on an upward force applied by the cable tie when the cable tie is disposed within the aperture and tensioned around the bundle abutting the mounting surface. a mounting section that is attachable to a supporting structure to secure the saddle mount (104-1; 104-2) to the supporting structure; and a saddle section: defining a mounting surface and an aperture for receiving a cable tie configured to wrap around and secure a bundle to the mounting surface; having a base portion connected to the mounting section, the mounting section extending from a surface of the base portion of the saddle section that is opposite the mounting surface; and having a mounting portion comprising: a bridge section connecting two laterally spaced and substantially parallel support rails to support the mounting surface of the saddle section for abutting the bundle; and first and second distal flexible tabs: laterally-extending from opposing lengthwise sides of the bridge section; being aligned with the support rails; having a thickness tapered from a proximal end connected to the bridge section to a distal end; and configured to flex to conform to the diameter of the bundle based on an upward force applied by the cable tie when the cable tie is disposed within the aperture and tensioned around the bundle abutting the mounting surface. defining a mounting surface and an aperture for receiving a cable tie configured to wrap around and secure a bundle to the mounting surface; having a base portion connected to the mounting section, the mounting section extending from a surface of the base portion of the saddle section that is opposite the mounting surface; and having a mounting portion comprising: a bridge section connecting two laterally spaced and substantially parallel support rails to support the mounting surface of the saddle section for abutting the bundle; and first and second distal flexible tabs: laterally-extending from opposing lengthwise sides of the bridge section; being aligned with the support rails; having a thickness tapered from a proximal end connected to the bridge section to a distal end; and configured to flex to conform to the diameter of the bundle based on an upward force applied by the cable tie when the cable tie is disposed within the aperture and tensioned around the bundle abutting the mounting surface. a bridge section connecting two laterally spaced and substantially parallel support rails to support the mounting surface of the saddle section for abutting the bundle; and first and second distal flexible tabs: laterally-extending from opposing lengthwise sides of the bridge section; being aligned with the support rails; having a thickness tapered from a proximal end connected to the bridge section to a distal end; and configured to flex to conform to the diameter of the bundle based on an upward force applied by the cable tie when the cable tie is disposed within the aperture and tensioned around the bundle abutting the mounting surface. laterally-extending from opposing lengthwise sides of the bridge section; being aligned with the support rails; having a thickness tapered from a proximal end connected to the bridge section to a distal end; and configured to flex to conform to the diameter of the bundle based on an upward force applied by the cable tie when the cable tie is disposed within the aperture and tensioned around the bundle abutting the mounting surface.