AVAILABLE ON LINE ONLY........Long-sleeved, crew neck t-shirt in "Silver Aid" fabric which gives it anti-bacterial properties. It is also antistatic, temperature regulating, quick drying and protects against the sun's harmful rays. Features: Breathability Two enviroments are artificially created with different hygrometic conditions and vapour is forced through the fabric, after wich vapour penetration is measured, with the result expressed in grams of water vapour per sq meters of fabric in 24 hours. UVA Ray Protection Meryl microfibre acts as a barrier, filtering the sun's rays wich are harmful to the skin and affording protection four times greater than that offered by polyester and twice that of cotton. Ergonomic These garments have a special cut and structure to facilitate body movement. Silver Aid antibacterial, antistatic, thermoregulator.