Corsair Katar Pro XT mouse feet - buy hyperglides Corsair Katar Pro XT mouse skates | FeetGlide
More info on the Corsair Katar Pro (Wireless), 69 grams for the wired, 96 for the wireless (Uses AA so could be lighter), 3327 for the wired, 3325 for the wireless (?) : r/MouseReview
Amazon.com: Corsair Katar Pro Wireless, Lightweight FPS/MOBA Gaming Mouse with Slipstream Technology, Compact Symmetric Shape, 10,000 DPI - Black : Video Games