The newly upgraded O'Neill Reactor II 2mm Men's springsuit wetsuit is engineered for performance in a value driven package. A perfect combination of stretch and durability. Fresh colors and graphics with style that's built to last. Back Zip - Easy Entry. Wind-Proof Smoothskin. Strategic Seam Placement. Adjustable Single Seal Collar. Key Pocket. Flatlock Stitched Breathable Seams. UltraFlex Composite.