Polaroid 360&deg; Rotation Helmet Mount with 3M Sticker for GoPro Hero 4/3+/3 Compatibility: GoPro HERO4, 3+ and 3 Cameras Dimensions: 5.8 x 4.6 x 0.2" / 147.32 x 116.84 x 5.08mm Weight: 2.1oz / 59.53g