Promote sustainability with the new O'Neill Women's Blueprint 4/3 Chest Zip Wetsuit. The Women’s Blueprint 4/3 offers mind-boggling minimal seams, flexibility, and warmth. O’Neil did a great job at creating an eco-friendly wetsuit. The TB4 Air Firewall technology improves durability and warmth. Altogether, the Women’s Blueprint 4/3 Chest Zip Wetsuit is the warmest, highest-performing sustainable wetsuit to date.