As part of the RW-10 range of race underwear from Sparco this long sleeve top is constructed using the very lightest fireproof material with extra flat seams to eliminate pressure points for reduced fatigue. The material features Sparco's X-Cool silver treatment which provides a cooling sensation on the skin.Ultra lightweight without compromising protectionUltra flat seams for superb comfort levelsPrinted logos to keep weight to a minimumX-Cool silver treatment provides a cooling sensation and is anti-bacterialThe RW-10 range of underwear from Sparco has been designed to surpass the stringent FIA 8856-2018 approval for increased heat and flame protection and also to meet the demands of top level race teams such as McLaren Formula 1.Sizes:XS - 82-89cm chestS/M -  90-105cm chestL/XL - 106-121cm chestXXL - 122-130cm chestFIA 8856-2018 approved