Nike Strike VaporKnit Drill Top. Lightweight; high performance training jacket from Nike.Features Nike\'s new VaporKnit technology. VaporKnit materi als are quick-drying with a precision fit. The textured design is created for a body in constant motion; with a knit mater ial that moves with you; while still providing a locked-in feel. Body-mapped cooling zones for breathability or warmth when needed . Speed stripes on the sides. 100% polyester.