RaceQuip 356 SFI-5 gloves are constructed with two layers of knit Nomex. The outseam, or reverse seam as they are sometimes called, have the seam on the outside for improved comfort and better feel on the wheel. These are the same style of glove that you typically see worn in the top levels like NASCAR, IndyCar, IMSA and others. The palms are a high grip, supple suede leather which also improves comfort and feel. An extra long cuffed gauntlet provides extra fire protection. Mitered fingers offer a more precise fit again increasing comfort and feel. Exceeds SFI 3.3/5 rating.