Brock String Vision Convergence Training Tool Train Vision Improve Strength & Athletic Performance And More 10 Foot White

Instruções de uso apenas em língua chinesa

Broc strings require patience and consistency of use. This one, unlike most on the market, is actually of a decent length, long enough for those of us training our eyes to see at mid-distance. One word of caution: don't be tempted to remove or rearrange the balls, as it is almost impossible to thread them back on the string. Good value. Give it a try!

Instructions were not included as specified in the product details. Disappointing

È utile ma vale un decimo del prezzo che l'ho pagata. Potete farvela da soli

Beads unfixed. No loop for fixing or holder. Just a piece of string and 5 beads. Disappointing.