Troy Lee - Sprint Ultra Race Jersey - Lines Ivy/WhiteTroy Lee Designs Sprint Ultra Jersey revises the Sprint line up creating a more comfortable piece that has more freedom of movement and a refined fit. Its BlueSign Certified TLD Ultra Knit fabric gives unrestricted freedom of movement that's backed up by the critical welding construction, reinforcing the seams to prevent rips under pressure. Covered in laser perforated ventilation with mesh underarm vents it's designed to allow plenty of airflow