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 G915 TKL review | Tom's Guide
Amazon.com: Logitech G915 TKL Tenkeyless Lightspeed Wireless RGB Mechanical Gaming Keyboard, Low Profile Switch Options, LIGHTSYNC RGB, Advanced Wireless and Bluetooth Support - Clicky , Black : Electronics
Best wrist rests: Logitech vs Razer vs Goldtouch - PC World Australia
Logitech MX Palm Rest - Keyboard Wrist Rest & Support
TKL Slim Stealth Padded Wrist Rest (Glorious PC)
Up To 30% Off on Logitech G LIGHTSPEED Wireles... | Groupon Goods