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Vivid color and performance fabric make the women's Brooks NightLife Podium half-zip top an easy choice during workouts in low light. Quick-drying polyester fabric features a moisture-wicking finish to aid in thermal regulation. 9.5 in. zipper allows cooling air circulation. Reflective detailing increases your visibility to motorists. Thumb holes in cuffs keep sleeves in place during motion. The semifitted Brooks NightLife Podium half-zip top is not too tight and not too loose.