This Sondico Core Base Short Sleeves is ideal for training. It features mesh ventilation panels under the arms and a rubberised trimmed hem for breathability and a comfortable fit. Powered by LYCRA® fibre, it offers long-lasting comfort and freedom of movement. Key features include a rubberised trim hem, mesh ventilation panels, crew neck collar, Sondico branding, and short sleeves. The shell is made of 92% Polyester and 8% Lycra (for Grey Marl, it's 90% Polyester / 10% Lycra), with mesh panels made of 82% polyester and 18% elastane. It is machine washable at 40 degrees and should be kept away from fire and flame.