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Optivibe is a combination of foams with two main focuses
For happy squirrels
Designed for both running and everyday use
It’s knitted upper gives a snug feel while remaining supportive in it’s fit
This is the world's lightest running underwear
Mens Saucony Endorphin Speed 4 Size:US 8.5 Optivibe is a combination ofThe Saucony Endorphin Speed 4 continues to push boundaries, offering superior performance for tempo efforts and long runs alike. This iteration sees updates from top to bottom to take your running experience to the next level! The upper features a redesigned mesh upper with targeted ventilation points to maximise breathability and an integrated gusseted tongue, ensuring an effortless midfoot lockdown. A redesigned nylon plate in the midsole offers
