Sony’s instructions specifically cover WH-CH710N replacement pads and describe fitting them into the groove while aligning the model’s slots and arrows.
Brainwavz’s product page explicitly lists Sony WH-CH710N as compatible with product BWAVZ-EP-WHXB900N-PU-BLK. It describes the pads as direct replacements that fit the existing mounting groove and gives dimensions of 30 mm thick × 100 mm high × 80 mm wide.