The Fox Racing Baseframe Pro Short Sleeve Mens is a versatile baselayer designed for those who seek both comfort and protection during their rides. This low-profile sleeveless guard is crafted to be worn discreetly under your jersey, providing essential coverage with built-in shoulder guards. The inclusion of a removable back insert enhances impact protection, while the fabric's moisture-wicking properties ensure you stay cool and dry. As you ride, the polymer material adapts to your body heat, offering a snug fit that maximizes comfort and minimizes restrictions. Exceeds EN1621-1 level 1 back certification for high and low-temperature conditions Removable CE certified D3O Viper back insert for superior impact protection Perforated and flexible back foam adapts to rider movement Moisture-wicking mesh fabric enhances breathability Shoulder inserts provide additional protection