Lap Time Muscle Tank Top. Sleeveless Muscle T-Shirt for Men. Features include: Collection: Training collection, Fabric: Recycled polyester elastane blend perforated jersey fabric [155 g/m2], Technology: Enjoy the cool-feeling comfort of DryFlight’s® ultra-wicking properties, Fit: Regular fit, Neck: Crew neck, Other Features: High visibility features, Reflective details, Rib knit collar, Freedom of movement, Comfortable.