Callaway Balboa TRX Golf Shoes White/Black Features: Callaway gives an added boost on the green with the Balboa TRX. Waterproof opti-repel microfiber leather upper. Synthetic panels at high-stress areas. Lace-up closure. Padded tongue and collar. Cushioned insole delivers all-day comfort. Opti-soft EVA midsole. 5mm, Opti-Vent sock liner. 7-spike, dura-rubber outsole provides multi-directional control.