The O'Neill Youth Reactor II 3/2mm Back Zip Wetsuit in Black & Ocean is newly upgraded and designed to enhance performance at great value. Providing both stretch and durability in a style that's built to last, this is a great wetsuit!Product Information: Product Code: 5044BS21-L43 Back zip - easy entry. Wind proof Smoothskin. Strategic Seam Placement. Adjustable Single Seal Collar. Key Pocket. Krypto Knee Padz. UltraFlex Composite. Flatlock Stitched Breathable Seams.