I personally got the random shape pack since it was cheaper and in stock, and it was enough to cover my board somewhat nicely. my feet don't slip at all even when the board is covered and packed

https://www.amazon.com/dp/B00QN2P81K/ref=cm_sw_r_cp_apa_fabc_LGa4Fb0H6W292?_encoding=UTF8&psc=1