The Mg4+ O2 Golf Shoe Pronounced Oh Too Takes The Athletic Design And Comfort Of The Best-Selling Mg4+ And Amplifies Them. This Version Is Our Latest Iteration Designed To Bolster Performance For Those Who Prefer A Spikeless Option. The Sawtooth Traction Pattern Offers Excellent Grip To Promote That Perfect Swing, While The External Heel Counter Provides Extra Stability Plus, These Perforated Ones Add A Bit Of Extra Breathability. Breathe New Life Into Your Game With The O2.