Endi on Twitter: "Perfect home made wrist rest for Logitech G815/915 :) Get 450x400x2mm mouse pad, cut it in 5 pieces, sew/glue it and done. Can try with the thicker 4mm pads.
Logitech MX Palm Rest - Keyboard Wrist Rest & Support
Logitech G915 TKL Tenkeyless LIGHTSPEED Wireless RGB Mechanical Gaming Keyboard, Low Profile Switch Options, LIGHTSYNC RGB, Advanced Wireless and Bluetooth Support - Walmart.com
Amazon.com: Logitech G G915 Lightspeed Wireless RGB Mechanical Gaming Keyboard (GL Tactile) Bundle with Wireless Gaming Mouse, MX Palm Rest and 4-Port USB 3.0 Hub (4 Items) : Video Games
Logitech G613 LIGHTSPEED Review - RTINGS.com
Amazon.com: Logitech G915 TKL Tenkeyless Lightspeed Wireless RGB Mechanical Gaming Keyboard, Low Profile Switch Options, Lightsync RGB, Advanced Wireless and Bluetooth Support - Tactile, White : Electronics