It is a proven fact that reduced nitrogen contributes to decompression sickness when scuba diving. The green diver down flag patch nitrox diver type emblem proudly represents dives performed using a unique enriched air mixture in their tank to dive deeper than normally possible. This iron-on applique is ideal for wearing on clothing or attaching to scuba gear to show your diving prowess. This green nitrox diver down flag patch can also be sewn on as necessary. With detailed stitching and quality throughout this is an excellent choice among scuba patch enthusiasts, plus it makes an amazing scuba gift.