I suggest these: https://www.amazon.com/dp/B01CVQNH9Q?ref=yo_pop_ma_swf

Fits perfectly around the go plus' clip backing.

These work really well for both the Go Plus and the Gotcha: hellosy Replacement Band for Misfit Shine Only -10pcs Sport Wristband Replacement/Wrist Strap Fitness Band/Wireless Activity Bracelet with Clasp https://www.amazon.com/dp/B01CVQNH9Q/ref=cm_sw_r_cp_apa_i3BPBbDJ9ANWQ