The new MG4+ O2 Golf Shoe-pronounced OH TOO-takes the athletic design and comfort of the best-selling MG4+ and amplifies them. The latest footwear addition is designed to bolster performance with an innovative sole design. The intense grip is a critical benefit to balancing and perfecting that swing. Breathe new life into your game with the O2. FEATURES: Made with premium waterproof TPU Removable & washable massaging insoles Locked-in stability with external heel counter Responsive auxetic lattice midsole & sidewall Fully padded mesh interior lining Odor inhibiting triple density foam cushion footbed Size & Fit: Narrow fit, if you are between sizes, we recommend ordering up