In case you just want to buy some:
Hyperglide Mouse Skates for Zowie ZA13 (Z-3) https://www.amazon.com/dp/B0714M3MKF/ref=cm_sw_r_cp_api_i_RXPzCb8TRPZ1P
They're slightly smaller than the FK2. I originally was gonna use the other pair of Hyperglides that i bought for my FK2, but nope, those only work with the ZA12/11. Had to order the ZA13 specific model. Anyway, here ya go - Hyperglide Mouse Skates for Zowie ZA13 (Z-3) https://www.amazon.com/dp/B0714M3MKF/ref=cm_sw_r_cp_apa_i_U-phCbCN5ZK4K Hyperglide Mouse Skates for Zowie ZA 11, ZA 12, FK 2, FK1, FK, and AM (Z-1) https://www.amazon.com/dp/B00X9FH8F8/ref=cm_sw_r_cp_apa_i_X.phCbJYNYBNN