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The TT Trainer delivers ultimate comfort in a high-mileage neutral workhorse.

• The TT Trainer delivers ultimate comfort in a high-mileage neutral workhorse.
• Z-Bound midsole rebounds a runner’s energy, reducing stress and fatigue
• CarbonSpan+ offers tunable control that maximizes a smooth, powerful “toe off” for effortless forward momentum without forefoot fatigue
• Air-mesh Upper delivers a snug fit while actively accommodating foot swelling during a race
• BareFit technology offers a fit that is more comfortable when worn without socks