RB1 1MM L/S Jacket Black/Electric Blue The RB1 Long Sleeve and Short Sleeve Tops feature our ultra-flexy Ninja Neoprene combined with flat-stitched seams. The light and stretchy material of the RB1 tops provide plenty of warmth and ultimate performance. FEATURES: Material: "Ninja Neoprene" Seams: Flat stitched Entry system: Pull-over with quarter back zip Lining: Soft Ultraspan flex-fabric that’s warm & cozy