RaceQuip 356 Series 2 Layer Nomex Outseam Race Gloves Black/Black X-LargeFeatures Double Layer Nomex Knit Construction Soft, Supple & Comfortable High Grip Suede Leather Reinforced Palm Reverse Seam for Superior Comfort and Feel Extra Long Cuffed Gauntlet Mitered Fingers For Precise Fit The RaceQuip 356 Series double layer outseam gloves are constructed with two layers of knit Nomex and exceeds the SFI 3. 3 5 rating. The outseam, or reverse seam as they are sometimes called, have the seam on the outside for improved